Physics-
General
Easy
Question
In the figure shown the current flowing through 2 R is :

- from left to right
- from right to left
- no current
- None of these
The correct answer is: from right to left
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In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is doubled?


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In the circuit shown in the figure, the current through

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\ current drawn from the battery
\ current drawn from the battery
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The net emf and internal resistance of three batteries as shown in figure is :



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find x y

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In the figure, the potentiometer wire AB of length L and resistance 9r is joined to the cell D of emf e and internal resistance r. The cell C's emf is
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By error, a student places moving–coil voltmeter V (nearly ideal) in series with the resistance in a circuit in order to read the current, as shown. The voltmeter reading will be

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In the figure shown the power generated in y is maximum when
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A battery of internal resistance 4W is connected to the network of resistance as shown. In order that the maximum power can be delivered to the network, the value of R in W should be :–



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