JEE Advanced 2014 Physics question
A galvanometer gives full scale deflection with 0.006 A current. By connecting it to a 4990 Ω resistance, it can be converted into a voltmeter of range 0 – 30 V. If connected to a Ω resistance, it becomes an ammeter of range 0 – 1.5 A. The value of n is
Answer: 5
Solution
Voltmeter: . Ammeter: shunt \dfrac{I_gG}{I - I_g}$ =
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