If the resistance 5ohm develops a heat of 42J per second heat develops in 2ohm resistance must be about
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Answer:
16.8 joule/sec
Explanation:
given:-
P1 = 42J per second
P=I²R
P1 = I²R1
P2 I²R2
42 = 5 (I² and I² gets cancelled)
P2 2
P2 = 42×2/5
P2 = 84/5
P2 = 16.8 J/sec
it is power don't consider it heat energy because it's unit is joule per second which is of power = work/time = joule per second.
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