Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = cosφ Ir + sinφ Iφ.
 A = sinφ Ir.
 A = cosφ Ir - sinφ Ir.
 A = cosφ Ir.

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Electromagnetic Field Theory
The effective reactance of an inductive coil

 none of these.
 remains same irrespective of the frequency.
 increases because of stray capacitance as the frequency increases.
 decreases because of stray capacitance as the frequency increases.

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Electromagnetic Field Theory
Two spheres of radius r1 and r2 are connected by a conducting wire. Each of the spheres has been given a charge Q. Now

 larger sphere will have greater potential.
 both of sphere will have same potential.
 smaller sphere will have zero potential.
 larger sphere will have smalled potential.

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