Faraday's law of induction A level

1. What does technology need
the most?
Chp 27, 26: 1. when there is a moving charge or flow of charge
(current), it produces magnetic field.
2. When a moving or a current carrying wire is in a magnetic field
they interact. There is magnetic force on them.
What if the magnet moves instead the charge?

2. Electric and magnetic forces are assumed to be
separate forces:
When charges move produce.....
When a magnet moves produce.....

8. Current Direction

9. Magnetic Flux

11. Faraday`s Law of
Electromagnetic Induction
When there is a change magnetic
flux, you can produce e.m.f or
induced a current. This the way that
we are producing our electricity

14. Lenz`s law Remind conservationof
energy, use phet simultion
The induced current always opposes the external magnetic field.
Which means:
1.Magnetic field of the the coil which carries induced current will be in the
same direction with the magnetic field of the magnet when magnet goes away
from the coil
2. If magnet approaches to the coil, the induced current will produce a
magnetic field in the opposite direction of the externa field