Questions
For what value of unknown resistance X, the potential difference between B and D will be zero in the arrangement of fig.
a
4 Ω
b
2 Ω
c
3 Ω
d
6 Ω
detailed solution
Correct option is D
When the bridge is balanced, the potential difference between B and D will be zero.PQ=RS120⋅5=6+X0⋅5 or 12=6+XX=6ΩTalk to our academic expert!
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Seven resistances are connected as shown in the figure. The equivalent resistance between A and B is
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