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[Solved] 100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?

  

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100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?

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Given: H = 100J, t = 1 sec, R = 4 ohms

We know that

H = I2RT

100 = I2 x 4 x 1

100/4 = I2

I = 5 amp

V = IR

V = 5 x 4

= 20V

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