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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An AC source rated 100 V (rms) supplies a current of 10 A (rms) to a circuit. The average power delivered by the source 
(a) must be 1000 W.
(b) may be 1000 W.
(c) may be greater than 1000 W.
(d) may be less than 1000 W.
Choose the correct option:
1. (a) only
2. (b), (c)
3. (b), (d)
4. (a), (d)

Subtopic:  Power factor |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.
Launched MCQ Practice Books

Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot

NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology