Please solve it as quickly as possible.
it's a need
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Answer:sorry i don't know at all but which classs
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Answer:
answer is (a)
Explanation:
it is a balanced wheatstone bridge. R1/R2=R3/R4
so the resistance of galvanometer does not matters as no current passes through it. so two 1 ohms resister would be in series both in the upper and the lower branch which in turn would again become parallel[1/Req=1/2+1/2]
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