NEET-XII-Physics
32: Electric Current in Conductors
- #6A 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) remain unchangeddigAnsr: aAns : (a) increase
As the resistance is connected to an ideal battery, it provides a constant potential difference across the two terminals. The internal resistance of the battery is also zero.
The power dissipated in the resistor,
P = `` \frac{{V}^{2}}{R}``
V is constant; hence V `` \propto \frac{1}{{R}^{}}``
Thus, if the value of the resistance is decreased, the power dissipated in the resistor will increase.
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