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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
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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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