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In a heating arrangement , an alternatin...

In a heating arrangement , an alternating current having a peak value of 28 A is used . To produce the same heat energy , If the constant current is used, its magnitude must be

A

about 1A

B

about 28 A

C

about 20 A

D

Cannot say

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(o)(I)` = 28 A
`therefore` `underset(rms)(I)` = `underset(o)(I)`/`sqrt 2` `approx` 20 A
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