Question

Moving a length of copper wire through a

magnetic field may cause the wire to have a
(1) potential difference across it
(2) lower temperature
(3) lower resistivity
(4) higher resistance

Answer 1

(1) potential difference across it

Step-by-step explanation:

When a conductor, such as a copper wire, cuts though the lines of a magnetic field, a potential differnce is induced in the conductor.

Answer 2

The correct answer is A. It may cause the wire to have a potential difference across it.

This is because of the Faradays Law that says, when a conductor moves through a magnetic field, there will be a generated motional electro motive force and will induce current across the wire.

The voltage will be generated on the length of the wire, assuming that the entire wire moves through a uniform field.