A magnet is moved through a coil of wire. The e.m.f. produced in the wire depends on
a
the number of turns in the coil
b
the strength of the magnet
c
the speed at which the magnet is moved
d
all of the above
e
none of the above
Explanation
Correct Option
dNo explanation available
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nonny08
2 months ago
The correct answer is D. all of the above
Simple explanation
When a magnet moves through a coil, electromagnetic induction happens. The induced e.m.f. depends on how fast the magnetic field changes (Faraday’s Law).
The e.m.f. increases when:
More turns in the coil (A)
More turns = more wire cutting the magnetic field → larger e.m.f.
Stronger magnet (B)
Strong magnet = stronger magnetic field → bigger change in flux → larger e.m.f.
Faster movement (C)
Faster motion = quicker change in magnetic field → larger e.m.f.
So the e.m.f. depends on all three factors.
