MHT CET 2024 Physics question
A galvanometer of resistance 'G' is shunted by resistance of 'S' ohm. To keep the main current in the circuit unchanged the resistance to be put in series with Galvanometer is
Answer: (A)
Solution
With the shunt connected in parallel, the galvanometer-shunt combination has resistance . Without the shunt the galvanometer alone has resistance . For the main current to remain unchanged, the total resistance of the branch must still be .
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