# Current Electricity MCQ with Answers pdf

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

a) Ampere

b) Volt

c) Ohm

d) Watt

a) Rubber

b) Wood

c) Copper

d) Glass

a) Newton’s law

b) Ohm’s law

c) Coulomb’s law

d) Kepler’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

Question 6: What happens to the resistance of a wire if its length is doubled, assuming the material remains the same?

a) It doubles

c) It halves

d) It remains the same

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)

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

## 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

Question 11: What is the unit of electric potential difference?

a) Ampere

b) Watt

c) Volt

d) Ohm

Question 12: Which component of an electric circuit is used to store electrical energy?

a) Resistor

b) Capacitor

c) Inductor

d) Diode

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

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

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

Question 20: Which of the following devices is used to protect electrical appliances from voltage spikes?

a) Transformer

b) Diode

c) Fuse

d) Capacitor

## 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

Question 24: What is the unit of electrical charge?

a) Volt

b) Ohm

c) Ampere

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

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

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

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

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

c) Lenz’s law

d) Coulomb’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

Question 35: What is the unit of electrical conductivity?

a) Siemens per meter

b) Ohm

c) Ampere

d) Watt

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

Question 37: What is the SI unit of electrical resistance?

a) Ohm

b) Watt

c) Ampere

d) Volt

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

Question 39: Which of the following materials is a good conductor of electricity?

a) Wood

b) Glass

c) Rubber

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

d) Lenz’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

Question 42: Which of the following is the unit of electrical power?

a) Volt

b) Ampere

c) Watt

d) Ohm

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

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

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

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

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

Question 50: Which of the following materials is a poor conductor of electricity?

a) Copper

b) Aluminum

c) Silver

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

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

c) Lenz’s law

d) Coulomb’s law

Question 53: Which of the following materials is a ferromagnetic material?

a) Aluminum

b) Copper

c) Iron

d) Silver

Question 54: Which of the following devices is used to measure electric current?

a) Voltmeter

b) Ammeter

c) Ohmmeter

d) Wattmeter

Question 55: Which of the following is the unit of electrical conductance?

a) Siemens

b) Ohm

c) Ampere

d) Coulomb

Question 56: Which of the following is a type of electrical component that stores electric charge?

a) Resistor

b) Capacitor

c) Diode

d) Transistor

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

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

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

Question 60: Which of the following is the unit of electrical capacitance?

a) Ohm

c) Ampere

d) Coulomb

## 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

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

Question 63: Which of the following devices is used to measure electric potential difference?

a) Voltmeter

b) Ammeter

c) Ohmmeter

d) Wattmeter

Question 64: Which of the following materials is a good insulator of electricity?

a) Copper

b) Aluminum

c) Glass

d) Silver

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

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

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

Question 69: Which of the following is the unit of electrical power?

a) Watt

b) Volt

c) Ohm

d) Ampere

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

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

Question 72: Which of the following devices is used to measure the resistance of a material?

a) Voltmeter

b) Ammeter

c) Ohmmeter

d) Wattmeter

Question 73: Which of the following materials is a good conductor of electricity?

a) Rubber

b) Glass

c) Plastic

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

d) Ampere’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

Question 76: Which of the following is the unit of electrical current?

a) Watt

b) Volt

c) Ohm

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

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

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

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

c) Kirchhoff’s voltage law

d) Ampere’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

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

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

c) Kirchhoff’s voltage law

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

Question 86: Which of the following is the unit of electrical potential difference?

a) Ohm

b) Ampere

c) Volt

d) Watt

Question 87: Which of the following materials is commonly used as an insulator in electrical circuits?

a) Copper

b) Aluminum

c) Plastic

d) Silver

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

Question 89: Which of the following materials is a semiconductor?

a) Copper

b) Aluminum

c) Silicon

d) Gold

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

Question 91: Which of the following materials is a good insulator of electricity?

a) Copper

b) Aluminum

c) Glass

d) Silver

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

Question 93: Which of the following materials is a poor conductor of electricity and heat?

a) Copper

b) Aluminum

c) Glass

d) Silver

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

c) Kirchhoff’s current law

d) Ampere’s 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

Question 96: Which of the following materials is a good conductor of electricity and heat?

a) Plastic

b) Glass

c) Aluminum

d) Rubber

Question 97: Which of the following devices is used to store electrical energy?

a) Capacitor

b) Inductor

c) Transformer

d) Resistor

Question 98: Which of the following is the unit of electrical power?

a) Ohm

b) Ampere

c) Watt

d) Joule

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

c) Kirchhoff’s current law

d) Ampere’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