Define current sensitivity and voltage sensitivity
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Posted by Shekhar Kumar 5 years ago
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Yogita Ingle 5 years ago
Current sensitivity : It is defined as the deflection of coil per unit current flowing in it.
Current Sensitivity,
Voltage sensitivity : It is defined on the deflection of coil per unit potential difference across its ends.
Voltage Sensitivty,
where G is resistance of galvanometer.
Justification: When number of turns N is doubled, then the current sensitivity (∝ N) is doubled; but at the same time, the resistance of galvanometer coil (G) will also be doubled, so voltage sensitivity (Sv ∝ N/G) will remain unchanged; hence inreasing current sensitivity does not necessarily increase the voltage sensitivity.
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