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What is the net emf of different cell connected in parallel GIVEN THAT EVERY CELL HAS ZERO INTERNAL RESISTANCE

What is the net emf of different cell connected in parallel GIVEN THAT EVERY CELL HAS ZERO INTERNAL RESISTANCE

Grade:12

2 Answers

Arun
25763 Points
2 years ago

Let the equivalent emf be E

and the equivalent resistance be r

From parallel combination of resistors, we can deduce that r= r1r2/ (r1+r2)

Also, using KCL, I=I1+I2

From Ohm’s Law, we know that, V=IR

For first branch,

I1= E1/r1

Similarly, for second branch,

I2=E2/r2

Therefore, the Equivalent emf, E= Ir= (E1/r1 + E2/r2)* r1r1/(r1+r2) = (E1r2+E2r1)/ (r1+r2)

Manav Patel
16 Points
2 years ago
But according to this formula if INTERNAL RESISTANCE = 0 then net emf will br infinity?...
I know this formula but is it true for ZERO INTERNAL RESISTANCE? .......

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