The direction of a magnetic field at a point can be determined by
A)a generator.
B)a compass.
C)a transformer.
D)electromagnetic induction.
E)none of the above.

Question

Quizplus · Accepted Answer

A compass is a device that detects the direction of a magnetic field. Generators and transformers are devices that produce or utilize magnetic fields. Electromagnetic induction is a phenomenon that occurs when a changing magnetic field induces an electric current in a conductor, but it is not a method for determining the direction of a magnetic field. Therefore, the best choice is B, a compass.

The Direction of a Magnetic Field at a Point Can