Q10 of 30 Page 127

In a metre bridge [Fig. 3.27], the balance point is found to be at 39.5 cm from the end A, when the resistor Y is of 12.5Ω.

Determine the resistance of X. Why are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips?

The diagram is shown below:



Balance Point from end A, l1 = 39.5 centimeter


Resistance of resistor Y = 12.5 Ω


Balance condition is given by,




⇒ X = 8.2 ohm


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