25.
When a current of 5 mA is passed through a galvanometer having a coil of resistance 15 Ω, it shows full scale deflection. The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range 0−10 V is:
A:
1.985×10^3 Ω
B:
2.045×10^3 Ω
C:
2.535×10^3 Ω
D:
4.005×10^3 Ω
The answer is:
A
