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. Which of these is a good insulator?

Aluminum

Iron

Silver

Rubber

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

Voltage around a loop sums to zero

Current is directly proportional to voltage

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

Resistance increases with temperature

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

Glass

Rubber

Wood

Copper

#4. What is a transistor used for?

Generating electricity

Measuring current

Switching and amplifying electronic signals

Storing electrical charge

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

Electric field

Atmospheric field

Gravitational field

Geomagnetic field

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

Watt

Ohm

Ampere

Volt

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

Pulsating Current

Alternating Current (AC)

Direct Current (DC)

Oscillating Current

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

Nikola Tesla

Alexander Graham Bell

Thomas Edison

George Westinghouse

#9. What is an inductor?

A component that stores energy in a magnetic field

A component that rectifies AC

A component that generates voltage

A component that stores energy in an electric field

#10. What is an electromagnet?

A permanent magnet

A magnet made of iron only

A magnet that never loses its magnetism

A magnet that uses electric current to produce a magnetic field

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

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

Finding capacitance

Calculating resistance

Measuring voltage

#12. What is a diode used for?

Converting DC to AC

Storing charge

Allowing current to flow in one direction only

Amplifying signals

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

Power equals voltage times current

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

Current is directly proportional to voltage

The sum of voltages around any closed loop equals zero

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

Albert Einstein

James Clerk Maxwell

Hans Christian Ørsted

Isaac Newton

#15. What is a ferromagnetic material?

A material that is a good conductor

A material that repels magnets

A material that is strongly attracted to magnets

A material that has no magnetic properties

#16. What type of current changes direction periodically?

Pulsating Current

Alternating Current (AC)

Direct Current (DC)

Steady Current

#17. What is a semiconductor?

A material that does not conduct electricity

A material with conductivity between a conductor and an insulator

A material that conducts electricity perfectly

A magnetic material

#18. What is a solenoid?

A type of diode

A type of resistor

A type of capacitor

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

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

Ampere

Ohm

Volt

Watt

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

Increases voltage and decreases current

Decreases voltage and increases current

Increases both voltage and current

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

Ampere

Volt

Ohm

Watt

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

Transformer

Generator

Battery

Motor

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

Combination circuit

Parallel circuit

Short circuit

Series circuit

#24. Who formulated the laws of electromagnetic induction?

Nikola Tesla

Thomas Edison

André-Marie Ampère

Michael Faraday

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

Increases

Becomes infinite

Stays the same

Decreases

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

Resistor

Semiconductor

Conductor

Insulator

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

Ohm

Joule

Volt

Watt

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

Solar flares

Magnetic storms

Aurora Borealis and Aurora Australis

Sunspots

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

Any magnet

A south pole

Another north pole

Any metal

#30. What is a capacitor?

A component that stores energy in a magnetic field

A component that amplifies signals

A component that stores energy in an electric field

A component that resists current flow

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

Decreases

Increases

Becomes zero

Stays the same

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

Decreases voltage and increases current

Increases both voltage and current

Decreases both voltage and current

Increases voltage and decreases current

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

Battery

Generator

Motor

Transformer

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

Coulomb's Law

Lenz's Law

Faraday's Law

Ohm's Law

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

Coulomb's Law

Lenz's Law

Faraday's Law

Ohm's Law

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

Michael Faraday

Thomas Edison

Nikola Tesla

George Westinghouse

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

120 Hz

50 Hz

100 Hz

60 Hz

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

Coulomb

Ohm

Volt

Ampere

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

Superconductor

Conductor

Insulator

Semiconductor

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

12 V

220-240 V

5 V

110-120 V

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

Closed circuit

Parallel circuit

Series circuit

Open circuit

#42. What is electromagnetic induction?

The repulsion between charges

The production of magnetic fields by electric current

The production of electric current by changing magnetic fields

The attraction between magnets

#43. What is a transformer used for?

Storing electrical energy

Converting DC to AC

Converting AC to DC

Changing voltage levels in AC circuits

#44. What is Ohm’s Law formula?

R = V × I

I = V × R

V = I ÷ R

V = I × R

#45. What is magnetic flux?

The measure of magnetic field strength

The speed of magnetic field lines

The resistance to magnetic field

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

#46. What is a short circuit?

A circuit with too much resistance

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

A circuit that is turned off

A circuit that stores energy

#47. What is a resistor?

A component that converts AC to DC

A component that stores electrical energy

A component that generates voltage

A component that opposes the flow of current

#48. What is a fuse used for?

To increase voltage

To convert AC to DC

To store electricity

To protect circuits from overcurrent

#49. What is a circuit breaker?

A reusable protective device that opens a circuit during overcurrent

A type of resistor

A type of transformer

A device that stores charge

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

Radial

Parallel to the wire

Perpendicular to the wire

Circular

Finish

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

Top 50 Electricity And Magnetism Quiz

Results

#1. Which of these is a good insulator?

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

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

#4. What is a transistor used for?

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

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

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

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

#9. What is an inductor?

#10. What is an electromagnet?

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

#12. What is a diode used for?

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

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

#15. What is a ferromagnetic material?

#16. What type of current changes direction periodically?

#17. What is a semiconductor?

#18. What is a solenoid?

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

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

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

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

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

#24. Who formulated the laws of electromagnetic induction?

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

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

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

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

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

#30. What is a capacitor?

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

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

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

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

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

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

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

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

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

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

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

#42. What is electromagnetic induction?

#43. What is a transformer used for?

#44. What is Ohm’s Law formula?

#45. What is magnetic flux?

#46. What is a short circuit?

#47. What is a resistor?

#48. What is a fuse used for?

#49. What is a circuit breaker?

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

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