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WorksheetsElectromagnetic Induction Review
Total questions: 15
Worksheet time: 15mins
All iron nails will fall
some of the iron nails will fall
All the nails will remain attracted
Voltage can be induced in a wire by
moving the wire near a magnet.
moving a magnet near the wire.
changing the current in a nearby wire.
all of these
A __________ is an electrical device that converts AC electricity from one voltage level to another
transformer
primary coil
secondary coil
center tap
If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,
one-half as much voltage is induced.
the same voltage is induced.
twice as much voltage is induced.
four times as much voltage is induced.
Can you produce current in a wire with a magnet that is sitting still?
Yes; having a magnet near a wire is enough to excite the electrons
No; the magnetic field has to be changing to excite the electrons
No; magnets cannot create electricity
Which pairs of materials could be used to create electromagnetic induction?
Coiled wire, a magnet
Coiled wire, a battery
A magnet, a battery
None of the above
Why is magnetic induction important?
Electromagnets are very versatile
Every electric motor uses induction
Because it's an easy way to produce electricity
All of the above
What can electromagnets do that regular magnets can't?
Switch their magnetic fields
Explode
Be turned off
They are both the same in every way
