Question

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

Answer 1

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.

Answer 2

Answer:

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