The device used to change the speed of an electric fan is Options: A . &nbspAmplifier B . &nbspRegulator C . &nbspSwitch D . &nbspRectifier

The device used to change the speed of an electric fan is

Question

The device used to change the speed of an electric fan is

Options:

A . Amplifier

B . Regulator

C . Switch

D . Rectifier

Answer: Option B

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