JEE Main 2016 Physics question
To know the resistance of a galvanometer by half deflection method, a battery of emf and resistance is used to deflect the galvanometer by angle . If a shunt of resistance is needed to get half deflection the , and are related by the equation:
Answer: (1)
Solution
**Without the shunt**, the galvanometer carries and deflects by . **With the shunt across the galvanometer**, the total current drawn is , and the fraction passing through the galvanometer is of this. Half deflection means half the
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