CUET · PHYSICS · PYQ PAPER 2023
A galvanometer having a resistance of \( 8 \, \Omega \) is shunted by a wire of resistance \( 2 \, \Omega \). If the current is 1 A, the part of it passing through the shunt will be:
- A 0.25 A
- B 0.78 A
- C 0.2 A
- D 0.8 A
Answer & Solution
Correct Answer
(D) 0.8 A
Step-by-step Solution
Detailed explanation
\( I_s = I \frac{R_g}{R_g + R_s} \) \( I_s = 1 \, A \times \frac{8 \, \Omega}{8 \, \Omega + 2 \, \Omega} \) \( I_s = 1 \times \frac{8}{10} = 0.8 \, A \)
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