PH-312
A.c. generator
Physics · Secondary 3 · Medium · A.c. generator
A simple a.c. generator lights a small lamp. The number of turns on the rotating coil is doubled, but the rotation speed and magnetic field strength stay the same. What happens to the brightness of the lamp?
- It becomes brighter.
- It becomes dimmer.
- Its brightness stays the same.
- It goes off completely.
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