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Solenoid

In the follow...

Question

In the following circuit diagram (fig) if the ammeter reading is zero, then the voltmeter reading will be

zero

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E_{1} + E_{2}

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E_{1}

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E_{2}

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Solution

The correct options are
C $E_{1}$
D $E_{2}$
If $I$ be the current in the circuit in clockwise direction, then $E_{1} - E_{2} = I (R_{1} + R_{2})$
as ammeter reading is zero so $I = 0$ . so, $E_{1} - E_{2} = 0 \Rightarrow E_{1} = E_{2}$
Thus, voltmeter reading , $V = E_{1} + I R_{1} = E_{1} = E_{2}$
Ans: C, D.

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