A 10 resistor is connected across a battery. The heat produced in the resistor in 5 seconds is 200 J. the potential difference across the resistor is:

Correct option is C

The correct answer is (C)  20 V

Given:

H = 200 J

R = 10 $\Omega$

T = 5 seconds

Formula used:

H = $$I^2$$ ×RT​

Where,

• H is the heat produced (in joules),
• $I$ is the current (in amperes),
• $R$ is the resistance (in ohms),
• $t$ is the time (in seconds).

H = $$\frac{V^2}{R}$$ t

200 = $$\frac{5V^2}{10}$$

400 = $$V^2$$

V = 20 V

The potential difference across the resistor is 20 V.​

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