Question

Pls answer it fast I will mark it brainliest

Answer 1

Take out current from any cell

as all are of same emf

Then from Kirchoff's Law

We get

$-Ir+E-Ir+E-Ir+E-Ir+E =0$

$-4Ir+4E=0$

$4Ir=4E$

$I=\frac{E}{r}$

Now Again using Kirchoff's Law

we get

$V_{A}-E+Ir-E+Ir=V_{B}$

$V_{A}-V_{B}=2E-2Ir$

$But\: I=\frac{E}{r}$

$V_{A}-V_{B}=2E-2\frac{E}{r}\times$

$V_{A}-V_{B}=2E-2E$

$V_{A}-V_{B}=0$

Answer 2

Answer:

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