An infinitely large plane carries a uniformly distributed charge such that the charge per unit area is 3.47E-6 C/m2. What is the electric field magnitude |E| at a point that is 2.40 m from the plane

Explanation:

Given

The charge per unit area on the plate is

Electric for a infinitely large plane is given by

Therefore, electric field at a point 2.4 m from the plane is

c) up is the direction the magnetic force is acting on the charge.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it