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Wanted to know whether the changing of a battery (potential difference)affects the change of power consumption of a resistor of a bulb. please tell me how the change will occur?

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    $\begingroup$ For most loads the power consumption will increase with the battery voltage. For an ohmic resistor it will be given by $P=U^2/R$, but lightbulbs are not ohmic resistors. $\endgroup$
    – CuriousOne
    Commented Jun 24, 2015 at 2:06
  • $\begingroup$ @CuriousOne then what's they? $\endgroup$
    – satyatech
    Commented Jun 25, 2015 at 15:59
  • $\begingroup$ What are lightbulbs? PTCs = positive temperature coefficient resistors. $\endgroup$
    – CuriousOne
    Commented Jun 25, 2015 at 17:20

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If resistor is an ohmic one, on applying a higher volt battery, power will increase as power for a resistor is $V^2/r$. If it is non ohmic one, the answer may depend upon other factors as well.

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