Top 350+ Solved Electromagnetics MCQ Questions Answer
Q. Find the displacement current when the flux density is given by t3 at 2 seconds.
a. 3
b. 6
c. 12
d. 27
Q. Find the force due to a current element of length 2cm and flux density of 12 tesla. Thecurrent through the element will be 5A.
a. 1 n
b. 1.2 n
c. 1.4 n
d. 1.6 n
Q. When the conduction current density and displacement current density are same, thedissipation factor will be
a. zero
b. minimum
c. maximum
d. unity
Q. Find the electric potential for an electric field 3units at a distance of 2m.
a. 9
b. 4
c. 6
d. 3/2
Q. Find the potential at a point (4, 3, -6) for the function V = 2x2y + 5z.
a. 96
b. 66
c. 30
d. -66
Q. Transform the vector A = 3i – 2j – 4k at P(2,3,3) to cylindrical coordinates
a. -3.6j – 4k
b. -3.6j + 4k
c. 3.6j – 4k
d. 3.6j + 4k
Q. , -2)
a. 2.467i + j + 1.167k
b. 2.467i – j + 1.167k
c. 2.467i – j – 1.167k
d. 2.467i + j – 1.167k
Q. Transform the vector (4,-2,-4) at (1,2,3) into spherical coordinates.
a. 3.197i – 2.393j + 4.472k
b. -3.197i + 2.393j – 4.472k
c. 3.197i + 2.393j + 4.472k
d. -3.197i – 2.393j – 4.472k
Q. Find the mean free path of an electron travelling at a speed of 18m/s in 2 seconds.
a. 9
b. 36
c. 0.11
d. 4.5