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What is the approximate peak value of an...

What is the approximate peak value of an altemating currrent producing four times the heat produced per second by a steady current of 2 A in a resistor ?

A

2.8A

B

4.0A

C

5.6A

D

8.0A

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(rms) = 2A`
`I_(rms) `= peak current ` = sqrt(2) I_(rms) = sqrt(2) xx 2 = 2.8 A`
Since, Power (heat produced per second) is four time.
`:. H prop I^(2) ` Hence, I. `2 I_(0)`
Hence, current `= 2I_(0) = 2 xx 2.8 = 5.6 A`
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