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Electricity is the flow of electrons due to a potential difference called voltage. The electrons naturally flows from a higher to a lower potential. Thus, the electrons flows from the positive to the negative terminal.
Answer would be: alternating.There is no electrical connection between the two coils. These only work if alternating current is supplied to the main coil. If DC was supplied, there would be no flow of current in the minor coil.
The answer is a constraint
Answer:
The magnitude of the electric field in the second case will be
of the electric field in the first case
Explanation:
The electric field at a distance
< R from the center of the sphere is given by
the formula
=
where R is the radius of the sphere, and, Q is the charge uniformly distributed on the sphere.
It is given that the same charge Q is distributed uniformly throughout a sphere of radius 2R and we have to find the electric field at same distance
from the center.
In the second case the electric field will be given by
= 
Therefore the magnitude of the electric field in the second case will be
of the electric field in the first case.