Question

A resistor of resistance $R$ is connected to an ideal battery. If the value of $R$ is decreased, the power dissipated in the resistor will

• A. Increase
• B. Decrease
• C. Remains unchanged
• D. None of these

Answer 1

The correct option is A Increase

If a resistor $R$ is connected to a battery of emf $Vvolt$ then energy dissipited in the resistor will be $P=\frac{V^2}{R}$ because battery is not being changed so energy will directly depend upon resistance.

so from this relation we can see that If we decrease $R$, then $P$ increases.