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?

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.

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

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