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How much will be heat devoloped if 0.2A current flows through a conductor of resistance 200 ohm for 5minutes?​

Answer»

Explanation:Heat dissipated in a RESISTANCE is given by H=i  2 ×r×t For OPTION A   H=5  2 ×10×2×60=30000W For option B   H=4  2 ×10×3×60=28800W For option C   H=3  2 ×10×6×60=32400W For option D   H=2  2 ×10×5×60=12000W from calculation we can see the heat  Which is MAXIMUM in CASE of 3 ampere  current for 6 minutes.



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