Four 2 ohm resistors are connected together along the edges of a square. A 10V battery of negligible internal resistance is connected across a pair of the diagonally opposite corners of the square. The power dissipated in the circuit is
A
100 W
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B
50W
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C
25W
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D
20W
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Solution
The correct option is B 50W Power dissipated in circuit =E2Reff Reff=4×42×4=2Ω ⇒P=10×102=50W