MHT CET 2022 Physics question
A galvanometer of resistance 200 is to be converted into an ammeter. The value of shunt resistance which allows 3% of the mains current through the galvanometer is equal to (nearly)
Answer: (D)
Solution
Let the main current be ; the galvanometer takes and the shunt takes . The shunt is in parallel with the galvanometer, so the potential differences are equal: $=(I-⇒
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