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Three moving iron type voltmeters are connected as shown below. Voltmeter readings are $V$, $V1$ and $V2$ , as indicated. The correct relation among the voltmeter readings is

  1. $V=\dfrac{V1}{\sqrt{2}}+\dfrac{V2}{\sqrt{2}}$
  2. $V =V_1 +V_2$
  3. $V =V_1V_2$
  4. $V =V_2 - V_1$
in Electrical Circuits by (1.5k points)
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