JEE Advanced · PhysicsHard
A galvanometer of resistance is shunted by a resistance . To increase the range of the galvanometer to times its original value, what should be the value of ?
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: A —
Solution
The shunt resistance must satisfy . For , we have , hence .
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