Electromagnetic Field Theory MCQ Questions & Answers | ECE

The inductance and energy stored in joules in the magnetic field of the solenoid having length 30 cm and diameter 3 cm and wound with 1000 turns of wire when carrying a current of 10 Amp.

Magnetic flux density is given by:

Tangential component of the electric field on perfect conductor will be

Lorentz's force law for a point charge q is given by:

Find, which statement is ""TRUE' for A vector field F
I. Solenoidal and irrotational if ∇ ⋅ F = 0 and ∇ × F = 0
II. Solenoidal but not irrotational, if ∇ ⋅ F ≠ 0 and ∇ × F = 0
III. Irrotational but not solenoidal, if ∇ × F ≠ 0 and ∇ ⋅ F ≠ 0
IV. Neither solenoidal nor irrotational, if ∇ ⋅ F ≠ 0 and ∇ × F ≠ 0

If the electric field strength of a plane wave is 12 V/m. What will be the strength of magnetic field in free space-

According to Ampere's circuital Law the line integral of H about any closed path is exactly . . . . . . . . to the direct current enclosed by that path.

Consider an interface between two dielectric materials, one with ε_r = 2 while the other has ε_r = 5. If the tangential component of electric field on one side of the interface has a magnitude of 10 V.m^-1. What is the magnitude of the tangential component of electric field on the other side?

At a frequency of 1 GHz, the equivalent inductance between the terminals of a $$\frac{\lambda }{8}$$ (λ represents wavelength) short-circuited lossless 50 Ω line is

A plane electromagnetic wave travelling in a perfect dielectric medium of characteristic impedance η₁ is incident normally on its boundary with another perfect dielectric medium of characteristic impedance η₂. The electric and magnetic field strengths of the incident wave are denoted by E₁ and H₁ respectively whereas E_r and H_r denote these quantities for the reflected wave, and E_t and H_t for the transmitted wave.
Which of the following relations are correct?
1. E_i = η₁H_i
2. E_r = η₁H_r
3. E_t = -η₂H_t
Select the correct answer using the options given below: