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24 March, 06:28

Resistor A has twice the resistance of resistor B. When individually connected across a given potential difference, which one dissipates the most power; and when connected in series across the same potential difference, which one dissipates the most power?

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  1. 24 March, 09:55
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    Resistor B when individually connected and Resistor A when connected in series.

    Explanation:

    Suppose Resistor B has resistance R then resistor A has resistance 2R.

    When individually connected across a given potential difference Resistor B will dissipate more power because power is inversely proportional to resistance.

    While when connected in series across the same potential resistor A will dissipate more power because resistor A will have more voltage and power is directly proportional to the square of the voltage.
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