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A battery of internal resistance $4\Omega$ is connected to the network of resistances as shown in figure. In order that the maximum power can be delivered to the network, the value of R in $2\Omega$ should be
A battery of internal resistance $4\Omega$ is connected to the network of resistances as shown in figure. In order that the maximum power can be delivered to the network, the value of R in $2\Omega$ should be
Updated On: Jun 23, 2023
- $\frac{4}{9}$
- 2
- $\frac{8}{3}$
- 18
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The Correct Option is B
Solution and Explanation
The given circuit is a balanced Wheatstone's bridge.
Thus, no current will flow across 6R of the side CD. The given circuit will now be equivalent to
For maximum power, net external resistance
= Total internal resistance
or 2R = 4 or R = $2\Omega$
Thus, no current will flow across 6R of the side CD. The given circuit will now be equivalent to
For maximum power, net external resistance
= Total internal resistance
or 2R = 4 or R = $2\Omega$
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