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1. What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?
 
According to the Right-Hand Thumb rule, Assume that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of the . Then your fingers will wrap around the conductor in the direction of the .
 
According to the Fleming’s Left hand rule, if we arrange our thumb, forefinger and the middle finger of the , then the thumb points towards the direction of the , the middle finger the direction of  and the forefinger the direction of .
 
2. Meena draws magnetic field lines of field close to the axis of a current carrying circular loop. As she moves away from the centre of the circular loop she observes that the lines keep on diverging. How will you explain her observation?
 
As the distance , the strength of the magnetic field .
 
Likewise, at every point of a current-carrying circular loop, the concentric circles representing the magnetic field around it would become  as she move away.