An alternating current having peak value \(14\) A is used to heat a metal wire. To produce the same heating effect, a constant current \(i\) can be used, where \(i\) is:
1. \(14\) A
2. about \(20\) A
3. \(7\) A
4. about \(10\) A

Subtopic:  Power factor |
 65%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

An AC source rated \(100~\mathrm{V}\) (rms) supplies a current of \(10~\mathrm{A}\) (rms) to a circuit. The average power delivered by the source:

(a) must be \(1000~\mathrm{W}\).
(b) may be \(1000~\mathrm{W}\).
(c) may be greater than \(1000~\mathrm{W}\).
(d) may be less than \(1000~\mathrm{W}\).


Choose the correct option:

1. (a) only
2. (b), (c)
3. (b), (d)
4. (a), (d)

Subtopic:  Power factor |
 61%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh