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Question
Out of the three fuses with current ratings 5A, 10A, 15A, which one is to be connected in a geyser circuit marked 3 kW, 220V? Give reason for your answer.
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Solution
The current flowing through Geyser
`= (3 xx 1000)/220 = 13.63` A = 14 A.
The rating of fuse should be just matching with the maximum current carried by the circuit. So the fuse rating should be of 15A.
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