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An ac having a peak value 1.41 A is used...

An ac having a peak value 1.41 A is used to heat a wire. A dc producing the same heating rate will be approximately

A

1.41 A

B

2.0 A

C

0.705 A

D

1.0 A

Text Solution

Verified by Experts

The correct Answer is:
D
The rms value of the alternating current,
`I_(rms)=I_0/sqrt2=1.41/1.41=1A`
Hence, the dc required to produce the same heating rate =1 A.
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CHHAYA PUBLICATION-ALTERNATING CURRENT -EXAMINATION ARCHIVE WITH SOLUTIONS (WBCHSE)
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