AP EAMCET · PHYSICS · Current Electricity
A uniform wire of length \(200 \mathrm{~cm}\) is connected to a battery, two resistors and a galvanometer as shown in the figure. The galvanometer shows null deflection when the jockey \(\mathrm{J}\) is at 80 \(\mathrm{cm}\) from point \(A\). If the resistor \(R_2\) is shunted with \(30 \Omega\) resistance, the galvanometer shows null deflection when the jockey \(J\) is at \(100 \mathrm{~cm}\) from point \(B\). Then the values of \(R_1\) and \(R_2\) respectively are
- A \(20 \Omega, 30 \Omega\)
- B \(30 \Omega, 20 \Omega\)
- C \(15 \Omega, 10 \Omega\)
- D \(10 \Omega, 15 \Omega\)
Answer & Solution
Correct Answer
(D) \(10 \Omega, 15 \Omega\)
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