Q.
Four equal resistors, each of resistance 10Ω are connected as shown in the circuit diagram. The equivalent resistance between A and B is
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a
5 Ω
b
10 Ω
c
20 Ω
d
40 Ω
answer is B.
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Detailed Solution
It is a simple wheat stone’s bridge and no current will flow through the middle wire because of lack of potential difference across transistor.Req=20×2020+20=10Ω
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