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In Fig 27-56, the ideal batteries have e...

In Fig 27-56, the ideal batteries have emf `emf_(1)2=200V and epsi_(2)=50V` and the resistances are `R_(1)=3.0 Omega and R_(2)=2.0 Omega`. If the potential at P is 100 V, what is at at Q?

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The correct Answer is:
`-40V`
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