A) angle of deflection
B) earths magnetic field
C) moment of inertia of the coil
D) none of the above
Correct Answer: D
Solution :
A galvanometer is said to be sensitive, if a small current passed through it produces a sufficiently large deflection. There are two- types of sensitivity current and voltage. Current sensitivity \[\frac{\phi }{i}=\frac{NAB}{C}\]Voltage sensitivity \[\frac{\phi }{V}=\frac{NAB}{CR}\]where A is area, B the magnetic field, N the number of turns, R the resistance and C the torque.
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