As a parallel-plate capacitor with circular plates 24 cm in diameter is being charged, the current density of the displacement current in the region between the plates is uniform and has a magnitude of 20 a/m2.

(a) calculate the magnitude b of the magnetic field at a distance r = 87 mm from the axis of symmetry of this region.

(b) calculate de/dt in this region.

Explanation:

a.)

The magnitude field

b.)

The displacement current

then

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force