- 1(current)
Q. No.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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn AC source rated \(100~\text{V}\) (rms) supplies a current of \(10~\text{A}\) (rms) to a circuit. The average power delivered by the source:
| (a) | must be \(1000~\text{W}\). |
| (b) | may be \(1000~\text{W}\). |
| (c) | may be greater than \(1000~\text{W}\). |
| (d) | may be less than \(1000~\text{W}\). |
| 1. | (a) only |
| 2. | (b), (c) |
| 3. | (b), (d) |
| 4. | (a), (d) |
Subtopic: Power factor |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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