Two resistances are connected in two gaps of a metre bridge. The balan – McqOptions

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1.	Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 ohms is connected in series with the smaller of the two. The null point shifts to 40 cm. The value of the smaller resistance in ohms is [KCET 2005]
A.	3
B.	6
C.	9
D.	12
Answer» D. 12

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