Three electric cells each of e.m.f 1.5V and internal resistance of 1.0Ω Ω are connected in parallel across an external resistance of 23 2 3 Ω Ω . Calculate ...

Question 1 Report

Three electric cells each of e.m.f 1.5V and internal resistance of 1.0 $Ω$ are connected in parallel across an external resistance of $\frac{2}{3}$ $Ω$ . Calculate the value of the current in the resistor

0.5 A

0.9A

1.5A

4.5A

Answer Details

E.m.f = 1.5

r = $\frac{1 \times 1 \times 1}{(1 \times 1) + (1 \times 1) + (1 \times 1)}$

r = $\frac{1}{3}$ $Ω$

I = $\frac{E . m . f}{r + R}$

I = $\frac{1.5}{\frac{1}{3} + \frac{2}{3}}$

I = 1.5A

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Current Electricity

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