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Solution


Q.

The figure below shows the Fleming's left hand rule. Identify the correct label with the function
1 Thumb – force  
2 Fore finger – magnetic field  
3 Middle finger – current  
4 All of these  

Ans.

(4)

According to Fleming's left hand rule stretch the thumb, fore finger and middle finger of your left hand side that they are mutually perpendicular. If the first finger points in the direction of magnetic field and second finger in the direction of current, then thumb will point in the direction of force.