A) Behaviour of moving charge along the circle is equivalent to current carrying circular coil for instantaneous value as well as for average value of magnetic field on its axis
B) If two identical charge particles are moving symmetrically along a circle then its behaviour with respect to magnetic field on the axis is equivalent to current carrying coil for both average and instantaneous value
C) For instantaneous value of magnetic field on the axis, the charge moving along a circle is equivalent to current carrying circular coil
D) Both b and c
Correct Answer: B
Solution :
A charge moving along a circle is equivalent to a current carrying coil, but with respect to magnetic field on the axis of circle. It/ is equivalent only for average value of magnetic field and not for instantaneous values. While if two charge particles are moving symmetrically along a circle at diametrically opposite points then the average as well as instantaneous magnetic field on its axis is same as due to a current carrying coil.
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