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A cell of e.m.f. 1.5v is connected in series with a resistor of 3\(\Omega\)....

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Question 620
A
5.0\(\Omega\)
B
4.5\(\Omega\)
C
2.4\(\Omega\)
D
2.0\(\Omega\)
E
1.8\(\Omega\)
Explanation
I = \(\frac{V}{R} = \frac{0.9}{3} = 3\)

r = \(\frac{E}{I} = \frac{1.5}{0.3} = 5\)

Correct option: A

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