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Question

In a typical Wheatstone network the resistance in cyclic order are A=10Ω,B=5Ω,C=4Ω and D=4Ω for the bridge to be balanced :-

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A
10Ω should be connected in parallel A
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B
10Ω should be connected in series with A
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C
5Ω should be connected in series with B
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D
5Ω should be connected in parallel with B
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Solution

The correct option is C 5Ω should be connected in series with B
a) here, A=10||10=10/2=5,B=5,C=4,D=4
and A/B=1,C/D=1 so, A/B=C/D
b) here, A=10+10=20,B=5,C=4,D=4
and A/B=4,C/D=1 so,A/BC/D
c) here,A=10,B=5+5=10,C=4,D=4
and A/B=1,C/D=1 so, A/B=C/D
d)here, A=10,B=5||5=5/2=2.5,C=4,D=4
And A/B=4,C/D=1 so,A/BC/D

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