A galvanometer having a coil resistance gives a full scale deflection when a current of is passed through it. What is the value of the resistance which can convert this galvanometer into voltmeter giving full scale deflection for a potential difference of ? Resistance required in series to convert it into voltmeter of range .
Step 1. Given data:
Current flowing through Galvanometer ,
Resistance of Galvanometer,
Potential difference,
Required Resistance,
Step 2. Calculating Required resistance, :
Applying Kirchhoff's law between A and B.
Hence, correct option is (C).