Explanation
From Fleming’s left hand rule the force on electron is towards the east means it is deflected towards east.
A man carrying suitable instruments will measure both electric and magnetic fields when he passes by a stationary electron. It can be solved by assuming the instruments to be at rest and the electron to be moving with velocity V in opposite direction to that of man, due to which there will be magnetic field as well as electric field.
Current loop acts as a magnetic dipole. Its magnetic moment is given by
M = NIA
Where N = number of turns, I = current in a loop. A = area of the loop.
From the above relation, we can conclude that magnetic dipole moment of a current loop is independent of magnetic field in which it is lying.
Net force on a current carrying closed loop is always zero if it is placed in a uniform magnetic field.
Couple of force on loop S will be maximum because for same perimeter the area of loop will be maximum and magnetic moment of loop = i x A. So, it will also be maximum for loop S.
According to the definition
By Fleming's left hand rule
By Fleming's left hand rule.
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