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400 J of heat is produced in 4 s in a 4....

400 J of heat is produced in 4 s in a 4.0ohm resistor. Find the potential difference across the resistor.

Text Solution

Verified by Experts

Here, H = 400 J
`:. (V^2t)/R = 400`
`:. V^2 = 400 xx R/t = 400 xx 4/4 = 400`
`:. V = 20 "volts"`
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