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  4. In the circuit shown in figure, if ammeter and voltmeter are ideal, then the power consumed in 9 Ω resistor will be

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Q. In the circuit shown in figure, if ammeter and voltmeter are ideal, then the power consumed in $9 \,\Omega$ resistor will bePhysics Question Image

Current Electricity

Solution:

image
No current goes through ideal voltmeter
$i=\frac{30}{30}=1 \,A $
$P=\frac{4}{9} . 9=4\, W$