Question

Which of the following can't increase the voltage produced by the generator?

• A. Using a powerful electromagnet to make the magnetic field stronger in place of a permanent magnet.
• B. By winding the coil round a soft iron core to increase the strength of magnetic field.
• C. By using a coil with more turns.
• D. Changing the material of the coil.

Answer 1

The correct option is D Changing the material of the coil.

Voltage/current produced in a generator can be increased by:
a) Using a powerful electromagnet to make the magnetic field stronger in place of a permanent magnet.
b) By winding the coil round a soft iron core to increase the strength of magnetic field.
c) By using a coil with more turns.
d) By rotating the coil faster.
e) By using a coil with a larger area.