MHT CET 2026 Physics question
When a galvanometer is shunted by a resistance 'S' its current capacity increases 'n' times. If the same galvanometer is shunted by another resistance 'S', its current capacity will increase to 'n'. The value of n in terms of n, S and S is
Answer: (D)
Solution
Let the galvanometer have resistance and full-scale current . With a shunt the total current is , and the shunt carries at the same potential difference as the galvanometer: , so . Similarly with shunt : . Equating, $(n-1)S =
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account