CUET · MATHS · PYQ PAPER 2024
The current through a \(4 / 3 \Omega\) external resistance connected to a parallel combination of two cells with emfs of 2 V and 1 V , internal resistances \(1 \Omega\) and \(2 \Omega\) respectively, is :
- A 1 A
- B \(2 / 3 A\)
- C \(3 / 4 A\)
- D \(5 / 6 A\)
Answer & Solution
Correct Answer
(D) \(5 / 6 A\)
Step-by-step Solution
Detailed explanation
\(E_{eq} = \frac{\frac{E_1}{r_1} + \frac{E_2}{r_2}}{\frac{1}{r_1} + \frac{1}{r_2}} = \frac{\frac{2}{1} + \frac{1}{2}}{\frac{1}{1} + \frac{1}{2}} = \frac{\frac{5}{2}}{\frac{3}{2}} = \frac{5}{3} \, V\)…
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