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Solution


Q.

Read the passage given below and answer the following questions from (i) to (v).

A magnet must exert an equal and opposite force on a current-carrying conductor. We know that current is due to the charge in motion. Thus, it is evident that a charge moving in a magnetic field experiences a force. If the direction of motion is perpendicular to the direction of the magnetic field, the magnitude of force experienced depends upon the charge, velocity, and strength of the magnetic field. Fleming’s left-hand rule gives the direction of the magnetic force.

(ii) An electron is travelling horizontally towards the east. A magnetic field in the vertically downward direction will exert a force in:
1 East  
2 West  
3 North  
4 South  

Ans.

(4)