Current Electricity MCQ with Answers pdf: we will discuss the chapter current electricity multiple choice questions from subject Electricity Engneering.
Current Electricity Class 12 NEET Questions
Question 1: What is the SI unit of electric current?
a) Ampere
b) Volt
c) Ohm
d) Watt
Answer: a) Ampere
Question 2: Which of the following materials is a good conductor of electricity?
a) Rubber
b) Wood
c) Copper
d) Glass
Answer: c) Copper
Question 3: Which law describes the relationship between current, voltage, and resistance?
a) Newton’s law
b) Ohm’s law
c) Coulomb’s law
d) Kepler’s law
Answer: b) Ohm’s law
Question 4: What is the formula to calculate electrical power?
a) Power = Voltage × Current
b) Power = Current^2 × Resistance
c) Power = Voltage / Current
d) Power = Current / Voltage
Answer: a) Power = Voltage × Current
Question 5: Which of the following devices is used to measure electric current?
a) Voltmeter
b) Ammeter
c) Oscilloscope
d) Multimeter
Answer: b) Ammeter
Question 6: What happens to the resistance of a wire if its length is doubled, assuming the material remains the same?
a) It doubles
b) It quadruples
c) It halves
d) It remains the same
Answer: a) It doubles
Question 7: Which of the following is a type of current that constantly changes direction?
a) Direct current (DC)
b) Alternating current (AC)
c) Transient current (TC)
d) Steady current (SC)
Answer: b) Alternating current (AC)
Question 8: What is the purpose of a fuse in an electrical circuit?
a) To regulate voltage
b) To measure current
c) To break the circuit in case of excessive current
d) To increase resistance
Answer: c) To break the circuit in case of excessive current
Question 9: What is the resistance of a circuit with a voltage of 12 volts and a current of 3 amperes?
a) 4 ohms
b) 9 ohms
c) 15 ohms
d) 36 ohms
Answer: a) 4 ohms
class 7 science chapter 14 mcq
Question 10: Which of the following is an example of a semiconductor material?
a) Copper
b) Aluminum
c) Silicon
d) Iron
Answer: c) Silicon
Question 11: What is the unit of electric potential difference?
a) Ampere
b) Watt
c) Volt
d) Ohm
Answer: c) Volt
Question 12: Which component of an electric circuit is used to store electrical energy?
a) Resistor
b) Capacitor
c) Inductor
d) Diode
Answer: b) Capacitor
Question 13: What is the direction of conventional current flow?
a) From positive to negative
b) From negative to positive
c) It depends on the circuit
d) It remains stationary
Answer: a) From positive to negative
Question 14: Which of the following factors affects the resistance of a wire?
a) Length of the wire
b) Temperature of the wire
c) Cross-sectional area of the wire
d) All of the above
Answer: d) All of the above
Question 15: Which of the following is the most efficient conductor of electricity?
a) Copper
b) Silver
c) Aluminum
d) Gold
Answer: b) Silver
Question 16: Which of the following is a measure of the opposition to the flow of current in a circuit?
a) Voltage
b) Current
c) Resistance
d) Conductance
Answer: c) Resistance
Question 17: What is the relationship between resistance (R), current (I), and voltage (V) in a circuit?
a) R = I × V
b) R = I / V
c) R = V / I
d) R = I + V
Answer: c) R = V / I
Question 18: What does the term “grounding” mean in an electrical context?
a) Connecting a circuit to the Earth’s surface
b) Providing a source of electrical energy
c) Increasing the resistance in a circuit
d) Discharging excess electrical charge
Answer: a) Connecting a circuit to the Earth’s surface
Question 19: Which of the following materials is an insulator?
a) Aluminum
b) Silver
c) Rubber
d) Copper
Answer: c) Rubber
Question 20: Which of the following devices is used to protect electrical appliances from voltage spikes?
a) Transformer
b) Diode
c) Fuse
d) Capacitor
Answer: c) Fuse
mcq on current electricity pdf
Question 21: What is the purpose of a circuit breaker in an electrical circuit?
a) To regulate voltage
b) To measure current
c) To break the circuit in case of excessive current
d) To increase resistance
Answer: c) To break the circuit in case of excessive current
Question 22: What is the relationship between power (P), current (I), and voltage (V) in a circuit?
a) P = I × V
b) P = I / V
c) P = V / I
d) P = I + V
Answer: a) P = I × V
Question 23: Which of the following devices converts electrical energy into mechanical energy?
a) Resistor
b) Capacitor
c) Inductor
d) Electric motor
Answer: d) Electric motor
Question 24: What is the unit of electrical charge?
a) Volt
b) Ohm
c) Ampere
d) Coulomb
Answer: d) Coulomb
Question 25: What is the purpose of a diode in an electrical circuit?
a) To control the flow of current in one direction
b) To measure current
c) To increase resistance
d) To regulate voltage
Answer: a) To control the flow of current in one direction
Question 26: Which of the following is a unit of electrical energy?
a) Ampere-hour
b) Volt-ampere
c) Watt-hour
d) Ohm-meter
Answer: c) Watt-hour
Question 27: Which of the following statements about series and parallel circuits is true?
a) Series circuits have a single path for current flow, while parallel circuits have multiple paths.
b) Series circuits have multiple paths for current flow, while parallel circuits have a single path.
c) Both series and parallel circuits have a single path for current flow.
d) Both series and parallel circuits have multiple paths for current flow.
Answer: a) Series circuits have a single path for current flow, while parallel circuits have multiple paths.
Question 28: Which of the following is a device used to store electric charge?
a) Transistor
b) Resistor
c) Inductor
d) Capacitor
Answer: d) Capacitor
Question 29: What happens to the resistance of a wire if its cross-sectional area is increased?
a) It increases
b) It decreases
c) It remains the same
d) It doubles
Answer: b) It decreases
Question 30: What is the purpose of a rectifier in an electrical circuit?
a) To measure current
b) To increase resistance
c) To regulate voltage
d) To convert AC to DC
Answer: d) To convert AC to DC
Current Electricity NEET Questions with Solutions
Question 31: Which of the following materials is a good insulator?
a) Copper
b) Aluminum
c) Glass
d) Silver
Answer: c) Glass
Question 32: Which law states that the total current entering a junction in a circuit is equal to the total current leaving the junction?
a) Kirchhoff’s law
b) Faraday’s law
c) Lenz’s law
d) Coulomb’s law
Answer: a) Kirchhoff’s law
Question 33: What is the relationship between power (P), voltage (V), and resistance (R) in a circuit?
a) P = V × R
b) P = V / R
c) P = R / V
d) P = R + V
Answer: b) P = V / R
Question 34: Which of the following devices is used to step up or step down voltage in an electrical circuit?
a) Transformer
b) Resistor
c) Capacitor
d) Transistor
Answer: a) Transformer
Question 35: What is the unit of electrical conductivity?
a) Siemens per meter
b) Ohm
c) Ampere
d) Watt
Answer: a) Siemens per meter
Question 36: Which of the following is a type of electric current that constantly changes direction?
a) DC
b) AC
c) EMF
d) None of the above
Answer: b) AC
Question 37: What is the SI unit of electrical resistance?
a) Ohm
b) Watt
c) Ampere
d) Volt
Answer: a) Ohm
Question 38: Which of the following is a measure of how easily an electric current can flow through a material?
a) Resistance
b) Conductivity
c) Inductance
d) Capacitance
Answer: b) Conductivity
Question 39: Which of the following materials is a good conductor of electricity?
a) Wood
b) Glass
c) Rubber
d) Copper
Answer: d) Copper
Question 40: Which law states that the potential difference across a conductor is directly proportional to the current flowing through it, provided the temperature and other physical conditions remain constant?
a) Kirchhoff’s law
b) Ohm’s law
c) Faraday’s law
d) Lenz’s law
Answer: b) Ohm’s law
Electric Circuit Quiz | Current Electricity Quiz
Question 41: Which of the following is the unit of electric charge?
a) Coulomb
b) Ohm
c) Ampere
d) Volt
Answer: a) Coulomb
Question 42: Which of the following is the unit of electrical power?
a) Volt
b) Ampere
c) Watt
d) Ohm
Answer: c) Watt
Question 43: Which of the following is a measure of the opposition that a circuit presents to the flow of electric current?
a) Conductance
b) Resistance
c) Inductance
d) Capacitance
Answer: b) Resistanc
Question 44: Which of the following devices is used to protect an electrical circuit from excess current?
a) Capacitor
b) Transformer
c) Resistor
d) Fuse
Answer: d) Fuse
Question 45: Which of the following is a measure of the rate at which electric energy is transferred?
a) Power
b) Voltage
c) Current
d) Resistance
Answer: a) Power
Question 46: What is the relationship between voltage and current in a circuit with a constant resistance?
a) They are directly proportional.
b) They are inversely proportional.
c) There is no relationship.
d) The relationship depends on the type of circuit.
Answer: a) They are directly proportional.
Question 47: Which of the following devices is used to regulate the voltage in an electrical circuit?
a) Capacitor
b) Transformer
c) Resistor
d) Voltage regulator
Answer: d) Voltage regulator
Question 48: Which of the following statements about a closed circuit is true?
a) It allows electric current to flow through it.
b) It does not allow electric current to flow through it.
c) It allows electric current to flow through it, but only in one direction.
d) It only allows alternating current to flow through it.
Answer: a) It allows electric current to flow through it.
Question 49: Which of the following is the unit of electric potential difference?
a) Volt
b) Ampere
c) Ohm
d) Watt
Answer: a) Volt
Question 50: Which of the following materials is a poor conductor of electricity?
a) Copper
b) Aluminum
c) Silver
d) Rubber
Answer: d) Rubber
Current Electricity MCQs
Question 51: Which of the following is a measure of the electric potential energy per unit charge in an electric circuit?
a) Current
b) Resistance
c) Power
d) Voltage
Answer: d) Voltage
Question 52: Which law states that the direction of an induced current in a conductor is always such that it opposes the change that produced it?
a) Kirchhoff’s law
b) Faraday’s law
c) Lenz’s law
d) Coulomb’s law
Answer: c) Lenz’s law
Question 53: Which of the following materials is a ferromagnetic material?
a) Aluminum
b) Copper
c) Iron
d) Silver
Answer: c) Iron
Question 54: Which of the following devices is used to measure electric current?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: b) Ammeter
Question 55: Which of the following is the unit of electrical conductance?
a) Siemens
b) Ohm
c) Ampere
d) Coulomb
Answer: a) Siemens
Question 56: Which of the following is a type of electrical component that stores electric charge?
a) Resistor
b) Capacitor
c) Diode
d) Transistor
Answer: b) Capacitor
Question 57: What is the name of the process by which a material becomes magnetized in the presence of a magnetic field?
a) Electrification
b) Polarization
c) Magnetization
d) Induction
Answer: c) Magnetization
Question 58: Which of the following devices is used to step up or step down the voltage in an electrical circuit?
a) Capacitor
b) Transformer
c) Resistor
d) Voltage regulator
Answer: b) Transformer
Question 59: What is the name of the force that causes electric charges to flow in a circuit?
a) Electromagnetic force
b) Magnetic force
c) Gravitational force
d) Electrostatic force
Answer: d) Electrostatic force
Question 60: Which of the following is the unit of electrical capacitance?
a) Ohm
b) Farad
c) Ampere
d) Coulomb
Answer: b) Farad
Electricity MCQs | Current Electricity Neet Questions
Question 61: Which of the following devices is used to convert AC voltage to DC voltage?
a) Capacitor
b) Transformer
c) Rectifier
d) Voltage regulator
Answer: c) Rectifier
Question 62: Which of the following is a measure of the magnetic field strength at a particular point?
a) Electric field
b) Magnetic flux
c) Magnetic field intensity
d) Magnetic permeability
Answer: c) Magnetic field intensity
Question 63: Which of the following devices is used to measure electric potential difference?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: a) Voltmeter
Question 64: Which of the following materials is a good insulator of electricity?
a) Copper
b) Aluminum
c) Glass
d) Silver
Answer: c) Glass
Question 65: Which law states that the sum of the currents entering any point in a circuit is equal to the sum of the currents leaving that point?
a) Kirchhoff’s voltage law
b) Ohm’s law
c) Faraday’s law
d) Kirchhoff’s current law
Answer: d) Kirchhoff’s current law
Question 66: Which of the following is the unit of electrical resistance?
a) Ohm
b) Watt
c) Ampere
d) Volt
Answer: a) Ohm
Question 67: Which of the following materials is a superconductor at room temperature?
a) Copper
b) Aluminum
c) Iron
d) None of the above
Answer: d) None of the above
Question 68: Which of the following devices is used to store electric charge?
a) Capacitor
b) Transformer
c) Resistor
d) Inductor
Answer: a) Capacitor
Question 69: Which of the following is the unit of electrical power?
a) Watt
b) Volt
c) Ohm
d) Ampere
Answer: a) Watt
Question 70: Which of the following is a measure of the opposition to the flow of electric current in a circuit?
a) Current
b) Voltage
c) Power
d) Resistance
Answer: d) Resistance
Question 71: Which of the following is the process of creating a voltage in a conductor by varying the magnetic field around it?
a) Electrification
b) Polarization
c) Magnetization
d) Induction
Answer: d) Induction
Question 72: Which of the following devices is used to measure the resistance of a material?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: c) Ohmmeter
Question 73: Which of the following materials is a good conductor of electricity?
a) Rubber
b) Glass
c) Plastic
d) Copper
Answer: d) Copper
Question 74: Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?
a) Kirchhoff’s current law
b) Ohm’s law
c) Faraday’s law
d) Ampere’s law
Answer: b) Ohm’s law
Question 75: Which of the following devices is used to protect an electrical circuit from overloading or short-circuiting?
a) Circuit breaker
b) Fuse
c) Resistor
d) Transformer
Answer: a) Circuit breaker
Question 76: Which of the following is the unit of electrical current?
a) Watt
b) Volt
c) Ohm
d) Ampere
Answer: d) Ampere
Question 77: Which of the following materials is a good conductor of electricity, but a poor conductor of heat?
a) Copper
b) Aluminum
c) Silver
d) All of the above
Answer: d) All of the above
Question 78: Which of the following devices is used to measure the electric current in a circuit?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: b) Ammeter
Question 79: Which of the following materials is a good conductor of heat, but a poor conductor of electricity?
a) Copper
b) Aluminum
c) Silver
d) Glass
Answer: d) Glass
Question 80: Which of the following devices is used to regulate the voltage in an electrical circuit?
a) Capacitor
b) Transformer
c) Resistor
d) Voltage regulator
Answer: d) Voltage regulator
Question 81: Which law states that the induced voltage in a circuit is directly proportional to the rate of change of the magnetic field that produces it?
a) Ohm’s law
b) Faraday’s law
c) Kirchhoff’s voltage law
d) Ampere’s law
Answer: b) Faraday’s law
Question 82: Which of the following devices is used to measure the electrical power in a circuit?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: d) Wattmeter
Question 83: Which of the following materials is a good conductor of electricity and also a good conductor of heat?
a) Copper
b) Aluminum
c) Silver
d) Glass
Answer: a) Copper
Question 84: Which law states that the magnetic field produced by a current-carrying conductor is directly proportional to the current in the conductor?
a) Ohm’s law
b) Faraday’s law
c) Kirchhoff’s voltage law
d) Ampere’s law
Answer: d) Ampere’s law
Question 85: Which of the following devices is used to protect an electrical circuit from overloading or short-circuiting by melting and breaking the circuit?
a) Circuit breaker
b) Fuse
c) Resistor
d) Transformer
Answer: b) Fuse
Question 86: Which of the following is the unit of electrical potential difference?
a) Ohm
b) Ampere
c) Volt
d) Watt
Answer: c) Volt
Question 87: Which of the following materials is commonly used as an insulator in electrical circuits?
a) Copper
b) Aluminum
c) Plastic
d) Silver
Answer: c) Plastic
Question 88: Which of the following devices is used to convert direct current (DC) into alternating current (AC)?
a) Transformer
b) Rectifier
c) Inverter
d) Capacitor
Answer: c) Inverter
Question 89: Which of the following materials is a semiconductor?
a) Copper
b) Aluminum
c) Silicon
d) Gold
Answer: c) Silicon
Question 90: Which of the following devices is used to measure the potential difference between two points in an electrical circuit?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
Answer: a) Voltmeter
Question 91: Which of the following materials is a good insulator of electricity?
a) Copper
b) Aluminum
c) Glass
d) Silver
Answer: c) Glass
Question 92: Which of the following devices is used to convert alternating current (AC) into direct current (DC)?
a) Transformer
b) Rectifier
c) Inverter
d) Capacitor
Answer: b) Rectifier
Question 93: Which of the following materials is a poor conductor of electricity and heat?
a) Copper
b) Aluminum
c) Glass
d) Silver
Answer: c) Glass
Question 94: Which law states that the algebraic sum of the currents entering and leaving a point in a circuit must be zero?
a) Ohm’s law
b) Faraday’s law
c) Kirchhoff’s current law
d) Ampere’s law
Answer: c) Kirchhoff’s current law
Question 95: Which of the following devices is used to increase or decrease the voltage of an alternating current (AC) in a circuit?
a) Transformer
b) Rectifier
c) Inverter
d) Capacitor
Answer: a) Transformer
Question 96: Which of the following materials is a good conductor of electricity and heat?
a) Plastic
b) Glass
c) Aluminum
d) Rubber
Answer: c) Aluminum
Question 97: Which of the following devices is used to store electrical energy?
a) Capacitor
b) Inductor
c) Transformer
d) Resistor
Answer: a) Capacitor
Question 98: Which of the following is the unit of electrical power?
a) Ohm
b) Ampere
c) Watt
d) Joule
Answer: c) Watt
Question 99: Which of the following laws states that the voltage across a conductor is directly proportional to the current flowing through it, given a constant temperature?
a) Ohm’s law
b) Faraday’s law
c) Kirchhoff’s current law
d) Ampere’s law
Answer: a) Ohm’s law
Question 100: Which of the following devices is used to protect electrical circuits from excessive current?
a) Capacitor
b) Inductor
c) Transformer
d) Fuse
Answer: d) Fuse