Electromagnetic induction

Question 1

Electromagnetic induction / The Generator Effect explain

Answer 1

When you pass a coil of wire through a magnetic field it will induce a potential difference in the wire as long as the wire or magnet is moving because it is the change in magnetic field that creates that potential difference.

Question 2

Change in _________ field induces ______ ________

Answer 2

Change in magnetic field induces potential difference

Question 3

What will happen to the direction of the potential difference each time we swap direction?

Answer 3

They swap directions/invert

Question 4

What happens if we pass a circuit through a magnetic field?

Answer 4

The induced potential difference from the change in magnetic field would generate a current in the circuit. Same rules apply and direction of current will swap each time we go in opposite directions.

Question 5

What happens if we move parallel to the magnetic field?

Answer 5

There won’t be any induced potential difference or current because there is no change in magnetic field.

Question 6

How to increase the current/potential difference in the Generator effect (Electromagnetic induction)

Answer 6

• Increase the strength of the magnetic field (Magnetic
  flux density)
• Move the wire/circuit or magnets more quickly
• Shape the wire into a coil

Question 7

What rule does the generator effect apply to other than between 2 magnets?

Answer 7

Moving a magnet into and out of a coil will generate a current in the coil whilst the magnetic field is still moving.

Question 8

A current will only flow if its a ______ wire

Answer 8

closed