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If the resistance 5ohm develops a heat of 42J per second heat develops in 2ohm resistance must be about |
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Answer» 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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