50 Electricity And Magnetism Quiz

Shock Your Brain – 50 Questions on Circuits, Fields & More

This 50 Electricity And Magnetism Quiz covers electric circuits, Ohm’s Law, components, magnetic fields, electromagnetism, motors, generators, transformers, inductance, capacitance, AC/DC, and key scientists. Each question includes four answer choices with the correct answer provided for self-checking.

Comment your score below after tallying your correct answers. Perfect for physics review, STEM units, or AP Physics prep. Share this quiz with classmates to spark your understanding of electricity and magnetism.

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Top 50 Electricity And Magnetism Quiz

Results

#1. What is Kirchhoff’s Voltage Law (KVL)?

Power equals voltage times current

The sum of voltages around any closed loop equals zero

Current is directly proportional to voltage

The sum of currents entering a junction equals the sum of currents leaving

#2. What is the basic law that describes the force between two electric charges?

Ohm's Law

Faraday's Law

Coulomb's Law

Lenz's Law

#3. Who invented the alternating current (AC) system?

Thomas Edison

George Westinghouse

Nikola Tesla

Michael Faraday

#4. What is the SI unit of electric current?

Volt

Ohm

Ampere

Watt

#5. What is a circuit where current has only one path to flow?

Parallel circuit

Series circuit

Combination circuit

Short circuit

#6. What type of current flows in one direction only?

Oscillating Current

Direct Current (DC)

Alternating Current (AC)

Pulsating Current

#7. What is a device that converts mechanical energy into electrical energy?

Generator

Motor

Battery

Transformer

#8. What is the magnetic field around a current-carrying wire?

Radial

Parallel to the wire

Circular

Perpendicular to the wire

#9. What is the right-hand rule used for?

Finding capacitance

Determining the direction of magnetic field around a current-carrying wire

Calculating resistance

Measuring voltage

#10. What is the SI unit of electric potential difference (voltage)?

Watt

Volt

Ohm

Ampere

#11. What is a fuse used for?

To convert AC to DC

To protect circuits from overcurrent

To increase voltage

To store electricity

#12. What is Ohm’s Law formula?

I = V × R

V = I ÷ R

R = V × I

V = I × R

#13. What is a capacitor?

A component that stores energy in an electric field

A component that stores energy in a magnetic field

A component that amplifies signals

A component that resists current flow

#14. What does a step-down transformer do?

Decreases voltage and increases current

Increases voltage and decreases current

Decreases both voltage and current

Increases both voltage and current

#15. Who formulated the laws of electromagnetic induction?

Nikola Tesla

Thomas Edison

Michael Faraday

André-Marie Ampère

#16. Which of these is a good conductor of electricity?

Rubber

Glass

Copper

Wood

#17. What is a material that allows electric current to flow easily called?

Insulator

Resistor

Semiconductor

Conductor

#18. What is a transformer used for?

Changing voltage levels in AC circuits

Storing electrical energy

Converting DC to AC

Converting AC to DC

#19. What is the SI unit of electric charge?

Coulomb

Volt

Ampere

Ohm

#20. What is a solenoid?

A type of diode

A coil of wire that produces a magnetic field when current flows through it

A type of capacitor

A type of resistor

#21. What are the northern and southern lights called?

Aurora Borealis and Aurora Australis

Magnetic storms

Solar flares

Sunspots

#22. Who discovered the relationship between electricity and magnetism?

James Clerk Maxwell

Isaac Newton

Hans Christian Ørsted

Albert Einstein

#23. What is a circuit where current has multiple paths to flow?

Closed circuit

Series circuit

Open circuit

Parallel circuit

#24. Which of these is a good insulator?

Silver

Aluminum

Iron

Rubber

#25. What is magnetic flux?

The speed of magnetic field lines

The resistance to magnetic field

The measure of magnetic field strength

The measure of the total magnetic field passing through a given area

#26. What is a short circuit?

A circuit with an unintended low-resistance path allowing excessive current

A circuit with too much resistance

A circuit that is turned off

A circuit that stores energy

#27. What is a resistor?

A component that opposes the flow of current

A component that stores electrical energy

A component that converts AC to DC

A component that generates voltage

#28. What is an electromagnet?

A permanent magnet

A magnet made of iron only

A magnet that uses electric current to produce a magnetic field

A magnet that never loses its magnetism

#29. What is a ferromagnetic material?

A material that has no magnetic properties

A material that repels magnets

A material that is strongly attracted to magnets

A material that is a good conductor

#30. What is the Earth’s magnetic field called?

Geomagnetic field

Electric field

Gravitational field

Atmospheric field

#31. What is a material that resists the flow of electric current called?

Superconductor

Insulator

Semiconductor

Conductor

#32. What is a diode used for?

Converting DC to AC

Amplifying signals

Allowing current to flow in one direction only

Storing charge

#33. What is an inductor?

A component that generates voltage

A component that stores energy in a magnetic field

A component that rectifies AC

A component that stores energy in an electric field

#34. What is the SI unit of electrical resistance?

Ampere

Watt

Volt

Ohm

#35. What is a circuit breaker?

A type of transformer

A device that stores charge

A reusable protective device that opens a circuit during overcurrent

A type of resistor

#36. What law states that the induced EMF opposes the change in magnetic flux?

Coulomb's Law

Ohm's Law

Lenz's Law

Faraday's Law

#37. What is the standard frequency of AC power in the United States?

60 Hz

50 Hz

120 Hz

100 Hz

#38. What happens to total resistance in a parallel circuit when you add more resistors?

Increases

Becomes infinite

Stays the same

Decreases

#39. What is a semiconductor?

A material that conducts electricity perfectly

A material that does not conduct electricity

A material with conductivity between a conductor and an insulator

A magnetic material

#40. What happens to total resistance in a series circuit when you add more resistors?

Decreases

Becomes zero

Increases

Stays the same

#41. What is a magnet’s north pole attracted to?

A south pole

Any magnet

Any metal

Another north pole

#42. What is Kirchhoff’s Current Law (KCL)?

Resistance increases with temperature

The sum of currents entering a junction equals the sum of currents leaving

Current is directly proportional to voltage

Voltage around a loop sums to zero

#43. What is the standard voltage for household outlets in the United States?

12 V

110-120 V

5 V

220-240 V

#44. What is electromagnetic induction?

The production of magnetic fields by electric current

The production of electric current by changing magnetic fields

The repulsion between charges

The attraction between magnets

#45. Who invented the direct current (DC) system and the first practical light bulb?

Alexander Graham Bell

George Westinghouse

Nikola Tesla

Thomas Edison

#46. What does a step-up transformer do?

Increases both voltage and current

Increases voltage and decreases current

Increases both voltage and current

Decreases voltage and increases current

#47. What is a transistor used for?

Storing electrical charge

Measuring current

Generating electricity

Switching and amplifying electronic signals

#48. What is the SI unit of electrical power?

Volt

Watt

Ohm

Joule

#49. What is a device that converts electrical energy into mechanical energy?

Motor

Generator

Transformer

Battery

#50. What type of current changes direction periodically?

Pulsating Current

Steady Current

Direct Current (DC)

Alternating Current (AC)

Finish

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Shock Your Brain – 50 Questions on Circuits, Fields & More

Top 50 Electricity And Magnetism Quiz

Results

#1. What is Kirchhoff’s Voltage Law (KVL)?

#2. What is the basic law that describes the force between two electric charges?

#3. Who invented the alternating current (AC) system?

#4. What is the SI unit of electric current?

#5. What is a circuit where current has only one path to flow?

#6. What type of current flows in one direction only?

#7. What is a device that converts mechanical energy into electrical energy?

#8. What is the magnetic field around a current-carrying wire?

#9. What is the right-hand rule used for?

#10. What is the SI unit of electric potential difference (voltage)?

#11. What is a fuse used for?

#12. What is Ohm’s Law formula?

#13. What is a capacitor?

#14. What does a step-down transformer do?

#15. Who formulated the laws of electromagnetic induction?

#16. Which of these is a good conductor of electricity?

#17. What is a material that allows electric current to flow easily called?

#18. What is a transformer used for?

#19. What is the SI unit of electric charge?

#20. What is a solenoid?

#21. What are the northern and southern lights called?

#22. Who discovered the relationship between electricity and magnetism?

#23. What is a circuit where current has multiple paths to flow?

#24. Which of these is a good insulator?

#25. What is magnetic flux?

#26. What is a short circuit?

#27. What is a resistor?

#28. What is an electromagnet?

#29. What is a ferromagnetic material?

#30. What is the Earth’s magnetic field called?

#31. What is a material that resists the flow of electric current called?

#32. What is a diode used for?

#33. What is an inductor?

#34. What is the SI unit of electrical resistance?

#35. What is a circuit breaker?

#36. What law states that the induced EMF opposes the change in magnetic flux?

#37. What is the standard frequency of AC power in the United States?

#38. What happens to total resistance in a parallel circuit when you add more resistors?

#39. What is a semiconductor?

#40. What happens to total resistance in a series circuit when you add more resistors?

#41. What is a magnet’s north pole attracted to?

#42. What is Kirchhoff’s Current Law (KCL)?

#43. What is the standard voltage for household outlets in the United States?

#44. What is electromagnetic induction?

#45. Who invented the direct current (DC) system and the first practical light bulb?

#46. What does a step-up transformer do?

#47. What is a transistor used for?

#48. What is the SI unit of electrical power?

#49. What is a device that converts electrical energy into mechanical energy?

#50. What type of current changes direction periodically?

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