JEE Main · PhysicsHard
A galvanometer of resistance is shunted by a resistance . If the current through the galvanometer is of the total current, what is the value of ?
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: A —
Solution
Using , we set . Thus $1/n = S/(S+G)$, which implies , so .
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