ELECTROMAGNET INDUCTION

Question 1

What is electromagnetic induction?

Answer 1

Passing a magnet through a solenoid to generate electricity.

Question 2

Induced = ?

Answer 2

Produced

Question 3

Electromagnetic induction is when….

Answer 3

A voltage is generated in a wire when the magnetic field around it changes.

Question 4

What are some ways electromagnetic induction can be caused?

Answer 4

• Moving a magnet in a coil of wire.
• Moving a coil of wire in and out of a magnetic field.
• Moving an electrical conductor (wire) through magnetic field lines.

Question 5

What are some ways to induce a bigger voltage?

Answer 5

• Move the magnet (or coil) faster
• Use a coil with an iron core
• Use more turns on the coil
• Use a stronger magnet

Question 6

What will happen when you move the conductor in the opposite direction or reverse the polarity of the magnet?

Answer 6

Reverse the voltage, making the current flow in the opposite direction.

Question 7

How is an alternating current produced?

Answer 7

Constantly moving the magnet or wire changes the voltage direction repeatedly

Question 8

Generators contain _______ and a ______ that spins to produce electricity.

Answer 8

1. coils or wire
2. magnet

Question 9

What is regenerative braking?

Answer 9

When slowing down or braking, an electric car can produce electricity
to charge the batteries.