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If I raise the volume/speed on my radio/fan, does it use more electricity?

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If I raise the volume/speed on my radio/fan, does it use more electricity?

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  1. No


  2. yes, more current

  3. no,it do not make any difference because of the transformer..

    it provides the output current as per the requirement...

  4. The volume/speed button on a radio/fan is just a variable resistor (potentiometer). By increasing/decreasing, you are just changing the value of the resistance in the circuit. As a result, you are also changing the current in the circuit.

    When resistance decreases, current increases (Ohms Law)

    V = I * R

    I = V/R

    For the same voltage, as resistance decreases current increases.
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