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Three cells each of e.m.f. 1.5v and an internal resistance of 1.0\(\Omega\) are ...

Three cells each of e.m.f. 1.5v and an internal resistance of 1.0\(\Omega\) are connected in parallel across a load resistance of 2.67\(\Omega\). Calculate the current in the load?
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  • A 0.26A
  • B 0.41A
  • C 0.50A
  • D 0.79A
Correct Answer: Option C
Explanation:
E = 1.5v
rT = \(\frac{1 \times 1\times 1}{(1\times1)+ (1\times1) +(1\times1)}\)
E.m. f = I(R + r) = 0.33\(\Omega\)
1.5 = I(2.67 + 0.33)
I = 0.5A

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