In a meter bridge experiment, resistance are connected as shown in figure, The balancing length 1, is 55 cm. Now an unknown resistance x is connected in series with P and new balancing length is found to be 75 cm. The value of x is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
For the balance point of meter bridge.
Case - I, when balancing length is 55 cm
…(i)
Case - II When an unknown resistance x is involved
…(ii)
By putting the value of Q from equation (i) in equation (ii)
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