Charge is uniformly distributed on a conduction sphere with radius r. the sphere is rotating around its z axis at an angular velocity w. suppose the magnetic permeability mo is the same outside and inside the sphere. solve for the magnetic induction b(r) using the known quantities q, r, and w for both r> r and r

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?