Question

Q.5 Find equivalent resistance between point A and B. 4 20 HE +​

Answer 1

Solution

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Correct option is A)

Starting from inner loop the between point F and point E resistances 10Ω and  2.5Ω are in parallel connection, their equivalent resistance will be  Req1=R1+R2R1R2=10+2.510×2.5Ω=2Ω resistance between F and E can be replaced with 2Ω 

Now resistance between point F and point G and Req1 are in series their equivalent resistance will be  Req2=10+2Ω=12Ω

In next step resistance between point F and point G and Req2 are in series their equivalent resistance will be  Req3=10+2Ω=12Ω resistance between G and D can be replaced with 12Ω 

The resistance between point G and point E and Req3 are in parallel, their equivalent resistance will be  Req4=R1+R2R1R2=12+12

16×16Ω=8Ω resistance between A and B can be replaced with 8Ω 

Thus eqvivalent resistance between A and B is 8Ω .

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