The coil of a sensitive M.C.G. swings too far on both sides. This movement can be quickly stopped by

The sensitivity of a M.C.G. will increase if

The sensitivity of a M.C.G. will increase if

A coil of insulated wire is connected to a galvanometer. What would be seen if a bar magnet with its south pole towards one face of the coil is (i) moved quickly toward it (ii) moved quickly away from it (iii) placed near its one face ? These activities are then repeated with north pole of the magnet. What will be the observations? (b) Name and define the phenomenon involved in above activities. (c) Name the rule which can determine the direction of current in each case.

The magnetic field at the centre of the M.C.G. is 0.25 T. The coil has an area of 0.2 m^(2) and has 28 turns. If the sensitivity of the M.C.G. is to be increased by 25%, the number of turns of the coil should be _______. Assume all other things remaining constant.

A bob is suspended from a carne by a cable of length l=5m . The carne and load are moving at a constant speed v_(0) The crane is stopped by a bumper and the cable swings out an angle of 60^(@) . Find the initial speed v_(0).(g=9.8m//s^(2))

A bob is suspended from a carne by a cable of length l=5m . The carne and load are moving at a constant speed v_(0) The crane is stopped by a bumper and the cable swings out an angle of 60^(@) . Find the initial speed v_(0).(g=9.8m//s^(2))

A bob is suspended from a crane by a cable of length l=5 m . The crane and load are moving at a constant speed v_(0) . The crane is stopped by a bumper and the bob on the cable swings out an angle of 60^(@) . The initial speed v_(0) is (g=9.8 m//s^(2))