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:
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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:

G1 Physics · Accepted Answer

Current sensitivity is proportional to N, but coil resistance also increases in the same proportion when turns are increased. Voltage sensitivity = current sensitivity / resistance, so it remains unchanged. Percentage change = 0%.