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A battery of internal resistance 4 Ω is connected to the network of resistances as shown in the figure. In order that the maximum power be delivered to the network, the value of R (in Ω ) should be

Correct answer

2

Step-by-step solution

The given circuit is a balanced Wheatstone's bridge. Thus, no current will flow across 6 R . The given circuit will now be equivalent to:- For maximum power, net external resistance = Total internal resistance or 2 R = 4 Ω or R = 2 Ω

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