Question

100 joule of heat are produced each second in a 4 ohm resistance find the potential difference across the resistor?
plz answer me quickly

Answer 1

As you know,

H=v^2/R t

So,

100×4=400=v^2

V=20v

Answer 2

The potential difference will be 2 root 68.You can use the formula that H=v^2×t/4.18×R