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Question
A wire of uniform cross-section and resistance of 12 ohm is bent in the shape of a circle as shown in the figure. A resistance of 10 ohms is connected to diametrically opposite ends C and D. A battery of emf 8V is connected between A and B. Determine the current flowing through arm AD.
Numerical
Solution
This circuit is balanced wheat stone bridge that can be drawn as below,
As it is balanced wheatston bridge, the circuit will be as below
VAB = 8V, hence current through ADB = `8/4` = 2A
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