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Slide 1

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Electromagnets
The strength of an electromagnet can be increased by
doing three things:
1) Increasing the voltage
2) Increasing the number of coils
3) Inserting an iron core
(The poles can be reversed by
reversing the direction of the current)…read more

Slide 2

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Electromagnetic
induction
The direction of the induced
current is reversed if...
1) The magnet is moved in the
opposite direction
2) The other pole is inserted
first…read more

Slide 3

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Electromagnetic
induction
The size of the induced current
can be increased by:
1) Increasing the speed of
movement
2) Increasing the magnet
strength
3) Increasing the number of
turns on the coil…read more

Slide 4

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AC Generator
Induced current can be increased in 4 ways:
1) Increasing the speed of movement
2) Increasing the magnetic field strength
3) Increasing the number of turns on the coil
4) Increasing the ore of the coil…read more

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