The scale of a galvanometer is divided into 150 equal divisions. The galvanomter has a current sensitivity of 15 div per ma and voltage senstivity of 3 div per milliovolt. What is the resisance of the galvanometer?

Options

A. `10 Omega`
B. `15 Omega`
C. `5 Omega`
D. `2.5 Omega`

Answer

C

Explanation

Current for full scale deflection`=10mA=I_g` Voltage for full scale deflection`=50 mV=V_g therefore G=(v_g)/(I_g)=(50 xx 10^(-3))/(10 xx 10^(-3))=5 Omega`.