Daily Practice Quiz 7: Electromagnetic Theory

A positive charge q is placed at x= 0 between two infinite metal plates placed at x= —d and at x = +d respectively. The metal plates lie in the yz plane.

The charge is at rest at t= 0, when a voltage +V is applied to the plate at —d and voltage —V is applied to the plate at x= +d. Assume that the quantity of the charge q is small enough that it does not perturb the field set up by the metal plates. The time that the charge q takes to reach the right plate is proportional to

An electromagnetic field in free space (μ_o, ϵ_o) is given by

Where. What is average power per unit area associated with this wave?

Two point charges in a dielectric medium with=2.25 interact with a magnitude of force of F₁ newtons.The magnitude the force F₂ it the same charges were present in free space is given by.

An air filled parallel plate capacitor is arranged such that the lower side of upper plate carries surface charge density 2 C/ m² and upper side of lower plate carries surface charge density -2C/m² as shown in figure. The electric field intensity between the plates will be

Electric flux density at r = 1 m is