A coil of wire is connected to an ammeter. When a bar magnet is moved in and out
ID: 1312789 • Letter: A
Question
A coil of wire is connected to an ammeter. When a bar magnet is moved in and out of the coil, the ammeter records a current. The current results because:
the coil acts like a transformer.
the changing magnetic field induces an electric field in the wire.
an electromagnetic wave is generated.
the wire is ferromagnetic.
none of the above.
the coil acts like a transformer.
the changing magnetic field induces an electric field in the wire.
an electromagnetic wave is generated.
the wire is ferromagnetic.
none of the above.
Explanation / Answer
the changing magnetic field induces an electric field in the wire.
the changing magnetic field induces an electric field in the wire.