Question

For a constant power source across a resistor, heat generated in a resistor:

• A. increases with increase in resistance
• B. increases with increase in applied potential
• C. increases with decrease in resistance
• D. is constant

Answer 1

The correct option is D is constant

Heat generated across the resistor is given by

$Q=I^{2}Rt=VIt$

Since, power supplied is constant,

$VI=\text{constant}$

$⟹Q=constant$