In the arrangement shown in figure, there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then:

In the arrangement shown in figure,there are two coils wound on a non-conducting cylinderical rod.Initially the key is not inserted.Then the key in inserted and later removes.Then, A. The galvanometer will not deflect B. The galvanometer will deflect in one direction when the key is inserted and in the opposite direction when the keys removed C. The galvanometer will deflect in one direction when the key is inserted and remain still when the key is removed . D. The galvanometer will deflect in one direction when the key is inserted and in the same direction when the key is removed .

In the arrangement shown below, two different coils A and B are inserted over a non-conducting hollow cylinder : i] Does the galvanometer [G] show any deflection when a constant current flows in coil A ? ii] Does the galvanometer show any deflection when current in coil A is changed with the help of the rheostat ? iii] Is there any change in deflection if the current in the coil A is changed at a faster rate ? Explain your observation in each case.

In the arrangement shown below, two different coils A and B are inserted over a non-conducting hollow cylinder : i] Does the galvanometer [G] show any deflection when a constant current flows in coil A ? ii] Does the galvanometer show any deflection when current in coil A is changed with the help of the rheostat ? iii] Is there any change in deflection if the current in the coil A is changed at a faster rate ? Explain your observation in each case.

Figure shows a conducting frame having battery and a resistance on which a movable conductor of length 0.5 m can slide, The whole arrangement is placed in a uniform magnetic field of B =0.4 T directed perpendicular and into the plane of frame. Initially the circuit is open. When the key is inserted, the conductor begins to move. It is found that a force 0.5 N has to be applied on the conductor to the left to keep it moving at constant speed to the right. Current flowing in the conductor is:

Figure shows a conducting frame having battery and a resistance on which a movable conductor of length 0.5 m can slide, The whole arrangement is placed in a uniform magnetic field of B =0.4 T directed perpendicular and into the plane of frame. Initially the circuit is open. When the key is inserted, the conductor begins to move. It is found that a force 0.5 N has to be applied on the conductor to the left to keep it moving at constant speed to the right. Current flowing in the conductor is:

For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance 75 cm from A when the key k is open The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E_(1) .

For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance 75 cm from A when the key k is open The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E_(1) .

Figure shows a powerful electromagnet arrangement. A copper ring, which is free to move, is placed on the projecting part of the core as shown. When the key is inserted, the ring