Physics Girl: Induction and Electromagnetism Quiz

What was the main focus of Diana's previous video?

• A demonstration of gravity

• The concept of inertia

• Liquid oxygen hovering between electromagnets

• The behavior of gases under pressure

What happens to the wire on top of the coils when the switch is flipped?

• It becomes magnetic

• It melts

• It jumps off

• It changes color

What is the role of an inductor in a circuit?

• To resist changes in current

• To convert AC to DC

• To store electrical charge

• To amplify sound

Why do inductors create a spark when the current is turned off?

• Because they release stored magnetic energy

• Because they absorb heat

• Because they increase resistance

• Because they generate light

What law explains the behavior of inductors when the current changes?

• Newton's Third Law

• Coulomb's Law

• Ohm's Law

• Faraday's Law of Induction

What is magnetic flux?

• The charge of an electron

• The speed of light in a vacuum

• The amount of magnetic field through an area

• The resistance of a material to magnetic fields

How is the concept of energy conservation related to inductors?

• Inductors create energy from nothing

• Inductors store energy in magnetic fields

• Inductors destroy energy

• Inductors convert energy into mass

What is a water hammer, as used in the video metaphor?

• A tool used to break water pipes

• A method to purify water

• A phenomenon where water flow is suddenly stopped

• A device to measure water pressure

What is the main purpose of Curiosity Stream, the video's sponsor?

• To publish scientific journals

• To offer online courses in physics

• To sell scientific equipment

• To provide educational documentaries and nonfiction titles

What is the benefit offered to the audience by Curiosity Stream?

• A free physics textbook

• Two months of free access

• A free online course

• A discount on electronics