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Permissible current through a fuse wire of diameter 1 mm is 1A. What should be the radius of a fuse wire, made of same material, whose permissible current is 8A ?
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Correct option is A
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An electric iron draws 5 amp a TV set draws 3 amp and refrigerator draws 2 amp from a 220 Volt main line. The three appliances are connected in parallel. If all the three are operating at the same time, the fuse used may be of
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