NCERT - Science

Book: NCERT - Science

Chapter: 12. Electricity

Subject: Physics - Class 10th

Q. No. 10 of Exercise-Pg-221

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How many 176 resistors in parallel are required to carry 5 A on a 220 V line?

Here, Potential difference = is 220 V

And the current, I = 5 A.

Thus, the resistance of the circuit is 44 ohms.

Now, we need to find the number of resistors should be connected in parallel to obtain a resultant resistance of 44. Suppose the number of 176 resistors required is ‘n’.


Thus, 4 resistors of 176 each should be connected in parallel.


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