Power Rating of a Resistor. The power rating of a resistor is the maximum power the resistorcan safely dissipate without too great a rise in temperature and hence damage to theresistor. (a) If the power rating of a 15 k 2 resistor is 5.0 W, what is the maximum allowablepotential difference across the terminals of the resistor? (b) A 9.0 k resistor is to beconnected across a 120 V potential difference. What power rating is required? (c) A 100.0and a 150.0 resistor, both rated at 2.00 W, are connected in series across a variablepotential difference. What is the greatest this potential difference can be without overheatingeither resistor, and what is the rate of heat generated in each resistor under theseconditions?

(a) The expression for power is P=V2R ........................................... (1) where V is…

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