Increases/Decreases
Magnetic Field Strength ______________ As you get closer to a wire in an electromagnet.
increases/gets stronger
A battery Powered fan is powered by a electric ____________.
Motor
The direction a magnet moves through a coil of wire determines the direction of the magnetic current
true
As more current Flows through a wire, the magnetic field around the wire _________________.
Increases
Changing ______________ of the current in a wire coils reverses an electromagnet's north and south poles.
Direction
current will not flow through a wire if the magnet is outside the coil
False
What is one way to make an electromagnet Weaker?
Less coils, less voltage, weaker magnet.
What type of core must be used to make a electromagnet
iron core
The direction a coil of wire moves through a magnetic field determines the direction of the electric current
true
What is one way to increase the power created by a electric generator?
stronger magnets, faster rotation, number of coils
What three types of energy does a electric generator generally interact with?
chemical (gasoline), magnetic, electrical
current will flow through a wire as long as the magnetic field around a coil is changing
true