In norma use, a current of 3.5 A flows through a hair dryer. Choose a suitable fuse from the following:

(a) 3 A
(b) 5 A
(c) 10 A
(d) 30 A

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Solution

(b) 5 A

We should use a fuse with current capacity slightly greater than the current drawn by the device. We will choose a fuse of 5 A current rating and the fuse wire will melt if the value of current exceeds 5 A.

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