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 the SI unit of electric current?

Ampere

Watt

Volt

Ohm

#2. What is a fuse used for?

To protect circuits from overcurrent

To convert AC to DC

To store electricity

To increase voltage

#3. What type of current changes direction periodically?

Alternating Current (AC)

Steady Current

Pulsating Current

Direct Current (DC)

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

Thomas Edison

Alexander Graham Bell

George Westinghouse

Nikola Tesla

#5. Which of these is a good insulator?

Aluminum

Silver

Iron

Rubber

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

Insulator

Resistor

Conductor

Semiconductor

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

220-240 V

5 V

12 V

110-120 V

#8. What is a ferromagnetic material?

A material that is strongly attracted to magnets

A material that repels magnets

A material that has no magnetic properties

A material that is a good conductor

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

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

Measuring voltage

Finding capacitance

Calculating resistance

#10. Who formulated the laws of electromagnetic induction?

André-Marie Ampère

Nikola Tesla

Michael Faraday

Thomas Edison

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

Volt

Ampere

Watt

Ohm

#12. What is Ohm’s Law formula?

R = V × I

V = I ÷ R

I = V × R

V = I × R

#13. What is a diode used for?

Amplifying signals

Converting DC to AC

Storing charge

Allowing current to flow in one direction only

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

Battery

Transformer

Generator

Motor

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

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

The sum of voltages around any closed loop equals zero

Current is directly proportional to voltage

Power equals voltage times current

#16. What is a capacitor?

A component that amplifies signals

A component that stores energy in a magnetic field

A component that stores energy in an electric field

A component that resists current flow

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

Superconductor

Semiconductor

Conductor

Insulator

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

Faraday's Law

Ohm's Law

Coulomb's Law

Lenz's Law

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

Solar flares

Magnetic storms

Sunspots

Aurora Borealis and Aurora Australis

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

Joule

Watt

Ohm

Volt

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

Any magnet

Another north pole

A south pole

Any metal

#22. What is magnetic flux?

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

The speed of magnetic field lines

The measure of magnetic field strength

The resistance to magnetic field

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

Coulomb

Ampere

Volt

Ohm

#24. What is a resistor?

A component that opposes the flow of current

A component that stores electrical energy

A component that generates voltage

A component that converts AC to DC

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

Alternating Current (AC)

Pulsating Current

Oscillating Current

Direct Current (DC)

#26. What is a short circuit?

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

A circuit that is turned off

A circuit that stores energy

A circuit with too much resistance

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

Becomes infinite

Increases

Stays the same

Decreases

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

Electric field

Atmospheric field

Gravitational field

Geomagnetic field

#29. What is a circuit breaker?

A type of transformer

A type of resistor

A reusable protective device that opens a circuit during overcurrent

A device that stores charge

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

James Clerk Maxwell

Albert Einstein

Hans Christian Ørsted

Isaac Newton

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

Circular

Perpendicular to the wire

Parallel to the wire

Radial

#32. What is a transformer used for?

Changing voltage levels in AC circuits

Converting AC to DC

Converting DC to AC

Storing electrical energy

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

Series circuit

Closed circuit

Open circuit

Parallel circuit

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

Increases

Stays the same

Becomes zero

Decreases

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

Increases both voltage and current

Decreases voltage and increases current

Increases voltage and decreases current

Increases both voltage and current

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

Resistance increases with temperature

Current is directly proportional to voltage

Voltage around a loop sums to zero

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

#37. What is an inductor?

A component that stores energy in an electric field

A component that stores energy in a magnetic field

A component that rectifies AC

A component that generates voltage

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

Ohm's Law

Faraday's Law

Coulomb's Law

Lenz's Law

#39. What is a transistor used for?

Measuring current

Generating electricity

Storing electrical charge

Switching and amplifying electronic signals

#40. What is an electromagnet?

A magnet made of iron only

A magnet that never loses its magnetism

A magnet that uses electric current to produce a magnetic field

A permanent magnet

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

Increases voltage and decreases current

Decreases voltage and increases current

Increases both voltage and current

Decreases both voltage and current

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

Ohm

Watt

Ampere

Volt

#43. What is a solenoid?

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

A type of diode

A type of resistor

A type of capacitor

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

Nikola Tesla

Michael Faraday

George Westinghouse

Thomas Edison

#45. What is a semiconductor?

A material that conducts electricity perfectly

A material that does not conduct electricity

A magnetic material

A material with conductivity between a conductor and an insulator

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

Parallel circuit

Short circuit

Series circuit

Combination circuit

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

120 Hz

100 Hz

50 Hz

60 Hz

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

Battery

Transformer

Generator

Motor

#49. What is electromagnetic induction?

The attraction between magnets

The production of magnetic fields by electric current

The repulsion between charges

The production of electric current by changing magnetic fields

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

Wood

Copper

Rubber

Glass

Finish

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

Top 50 Electricity And Magnetism Quiz

Results

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

#2. What is a fuse used for?

#3. What type of current changes direction periodically?

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

#5. Which of these is a good insulator?

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

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

#8. What is a ferromagnetic material?

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

#10. Who formulated the laws of electromagnetic induction?

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

#12. What is Ohm’s Law formula?

#13. What is a diode used for?

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

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

#16. What is a capacitor?

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

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

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

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

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

#22. What is magnetic flux?

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

#24. What is a resistor?

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

#26. What is a short circuit?

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

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

#29. What is a circuit breaker?

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

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

#32. What is a transformer used for?

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

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

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

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

#37. What is an inductor?

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

#39. What is a transistor used for?

#40. What is an electromagnet?

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

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

#43. What is a solenoid?

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

#45. What is a semiconductor?

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

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

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

#49. What is electromagnetic induction?

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

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