400 J of heat is produced in 4s in a 4 Ω resistor. Find potential difference across the resistor.
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Hi friend,
We know that,
Heat produced, H = i2Rt
=> H = (V/R)2Rt
=> H = V2t/R
=> V2 = HR/t
=> V = (400×4/4)1/2
=> V = 20 V
This is the required voltage.
Hope this helps you..☺☺
We know that,
Heat produced, H = i2Rt
=> H = (V/R)2Rt
=> H = V2t/R
=> V2 = HR/t
=> V = (400×4/4)1/2
=> V = 20 V
This is the required voltage.
Hope this helps you..☺☺
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