Question

If we use a powerful electromagnet in place of permanent magnet in a generator, then:

• A. voltage produced by the generator increases.
• B. current produced by the generator increases.
• C. Both A and B are true.
• D. No effect on current or voltage occurs.

Answer 1

Answer: (C)

Both A and B are true.

If a powerful electromagnet is used instead of a permanent magnet, magnetic field strength increases. This increase in magnetic field strength leads to the increase in induced voltage in the coil. An increased voltage leads to an increased induced current in the generator.