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

Question

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

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

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - 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.

5 views Answered 2023-02-05 15:29