Question

21. (i) How much work is done in moving a charge of 3C across two points having a
potential difference of 15V?
(ii) Find the equivalent resistance between Aand B.
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Answer 1

Answer:

So we get the equivalent by the formula, 1Req=1R1+1R2+1R3+.... Now in the top wire in between the points A and B we have 2 resistances which are in series. So the equivalent resistance between the points A and B will be 11R15.