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find the currents in the different resistor shown in figure.

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The two `2(Omega)`resistors are in series so that their equivalent resistance are in series so that their equivalent resistance is `4(Omega)`. The two 8(Omega) resistors are in parallel and their equivalent resistance is also`4(Omega).`The circuit may be redrawn as in firgure.
Suppose the middle `4Omega`resistor is removed, THe remaining circuit is redrawn in figure, Is is easy to see that no current will go through any resistor. if we take the potential at b to be zero,the potential at d will be 2V.The potential at a and c will also be 2V.As there is no current in the `4(Omega)resistors, the potential as e will also be 2V. Thus, there is mo potential difference between d and e, no current will be drawn into it and hence no change will occur in the remaining part of the circuit. This circuit is then the same as hte given circuit. Thus,the current in all the resistors in the given circuit is zero.
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HC VERMA-ELECTRIC CURRENT IN CONDUCTORS-worked out Example
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