In the circuit shown in figure i) the power supplied by 10V battery is ___ ii) the power consumed by 4 V battery is ___ iii) the power dissipated in3 Ω resistance is __

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In the circuit shown in figure

Question Image

i) the power supplied by 10V battery is ___

ii) the power consumed by 4 V battery is ___

iii) the power dissipated in $3 Ω$ resistance is ___

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8W, 12W, 20W

20W, 8W, 12W

10W, 4W, 3W

15W, 10W, 2W

answer is B.

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Detailed Solution

V = 10 V - 4 V = 6 V

$I = \frac{V}{R} = \frac{6}{3} = 2 A$

$P = VI = 10 \times 2 = 20 w$

$P = VI = 4 \times 2 = 8 w$

$P = \frac{v^{2}}{R} = \frac{6^{2}}{3} = \frac{36}{3} = 12 w$

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