The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by 50 % . The percentage change in voltage sensitivity of the galvanometer will be :

Step-by-step solution

Current sensitivity = Voltage sensitivity × R If current sensitivity is made 1 . 5 times, then R also increase 1 . 5 times. Hence, voltage sensitivity = 1 . 5 ×  current sensitivity  1 . 5 × R = no change.