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If fuses of 250mA, 500mA, 1A, 5A, and 10A were available, which one would be the most suitable for protecting an amplifier rated at 240V, 180W?
If fuses of 250mA, 500mA, 1A, 5A, and 10A were available, which one would be the most suitable for protecting an amplifier rated at 240V, 180W?
CBSE | Class 10 | Lakhmir Singh | Magnetic Effects of Electric Current | Physics
If fuses of 250mA, 500mA, 1A, 5A, and 10A were available, which one would be the most suitable for protecting an amplifier rated at 240V, 180W?

Solution:

Given,

P = 180W

V = 240V

As we know that,

P = VI

Thus, evaluating the value of I

I = P/V = 180/240 = 0.75 A

Because of this, the fuse wire should be capable of withstanding currents up to 0.75A. As a result, a 1A fuse is more appropriate.

i

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