Answer:
Explanation:
the sphere is solid and conducting, so the charge is uniformly distributed over its volume.
Answer:I think it’s self monitoring sorry if wrong
Explanation:
Answer:
Current in the toroid will be 
Explanation:
We have given number of winding in rectangular toroid N = 1500
Self inductance of toroid L = 0.06 H
Magnetic energy stored in toroid 
We have to find the current in the toroid
Magnetic energy stored is equal to 


So current in the toroid will be 
The direction of the motion is constantly changing during
motion over any closed path, not only circular.