100 J of heat is produced each second in a 4 Ω resistance. Which of the following is the potential difference across the resistor?

100 J

of heat is produced each second in a

4 Ω

resistance. The potential difference across the resistor is

20 V

.
Given, Resistance,

R = 4 Ω

Taking time

, t = 1 s

heat produced,

H = 100 J

We know that,

H = \frac{V^{2}}{R} t

Therefore, potential difference across the resistor,

V = \sqrt{\frac{HR}{t}}

= \sqrt{\frac{100 \times 4}{1}}

= 20 V

$100 J$ of heat is produced each second in a $4 Ω$ resistance. Which of the following is the potential difference across the resistor?