A teacher pushes a magnet in and out of a coil of wire, as shown, to show electromagnetic induction. Which statement is correct?
- AAs the magnet is moved into the coil the left-hand end of the coil becomes a S-pole.
- BAs the magnet is taken out of the coil the left-hand end of the coil becomes a N-pole.
- CIncreasing the speed at which the magnet enters the coil, increases the induced voltage.
- DIncreasing the speed at which the magnet leaves the coil decreases the induced voltage.