Two cells each of e.m.f. 1.5V and an internal resistance 2\(\Omega\) are connected in parallel....

JAMB 1984

Two cells each of e.m.f. 1.5V and an internal resistance 2\(\Omega\) are connected in parallel. Calculate the current flowing when the cells are connected to a 1\(\Omega\) resistor

A. 0.75\(\Omega\)
B. 1.5\(\Omega\)
C. 0.5\(\Omega\)
D. 1.0\(\Omega\)
E. 0.6\(\Omega\)

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Correct Answer: Option A

Explanation

E = 1.5v

r_T = \(\frac{2 \times 2}{2 + 2}\)
= 1

e.m.f. = I(R + r)

1.5 = I(1 + 1)

I = 0.75\(\Omega\)

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Two cells each of e.m.f. 1.5V and an internal resistance 2\(\Omega\) are connected in parallel....

Correct Answer: Option A

Explanation

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