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The deflection in moving coil galvanomet...

The deflection in moving coil galvanometer is reduced to half when it is shunted with a `40 Omega` coil . The resistance of the galvanometer is

A

`15Omega`

B

`20Omega`

C

`40Omega`

D

`80Omega`

Text Solution

AI Generated Solution

To solve the problem, we need to find the resistance of the galvanometer when it is shunted with a 40-ohm coil, and the deflection is reduced to half. Here’s a step-by-step solution: ### Step 1: Understand the Situation When the galvanometer is shunted with a 40-ohm resistor, the total current flowing into the circuit is divided between the galvanometer and the shunt resistor. The current through the galvanometer is reduced to half due to the shunt. ### Step 2: Define Variables Let: - \( I \) = total current flowing into the circuit ...
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