Moving Charges & Magnetism | Case Study-03 All the best! 1. A moving coil galvanometer is an instrument which- is used to measure emf is used to measure potential difference is used to measure resistance is a deflection instrument which gives a deflection when a current flows through its coil None 2. To make the field radial in a moving coil galvanometer- number of turns of coil is kept small magnet is taken in the form of horse-shoe poles are of very strong magnets poles are cylindrically cut None 3. The deflection in a moving coil galvanometer is- directly proportional to the torsional constant of the spring directly proportional to the number of turns of the coil inversely proportional to the area of the coil inversely proportional to the current in the coil None 4. In a moving coil galvanometer, a coil of N turns of area A and carrying current I is placed in a radial field of strength B, then torque acting upon the coil is- (A) NA2B2I (B) NABI2 (C) N2ABI (D) NABI Option (A) Option (B) Option (C) Option (D) None 5. To increase the current sensitivity of a moving coil galvanometer, we should decrease- strength of magnet torsional constant of spring number of turns in coil area of coil None 1 out of 5 Time's up
