Top 350+ Solved Electromagnetics MCQ Questions Answer
Q. Compute the refractive index when the dielectric constant is 256 in air.
a. 2562
b. 16
c. 256
d. 64
Q. Leakage in capacitors is primarily caused by _________
a. transistors
b. resistors
c. inductors
d. dc motors
Q. What is the conduction current when a capacitor is fully charged?
a. infinity
b. zero
c. 100a
d. 1000a
Q. The flow of electrons in dielectric is due to _________
a. conduction
b. potential difference
c. breakdown
d. resistance
Q. Displacement current depends on ___________
a. moving charges
b. change in time
c. both moving charges and change in time
d. neither moving charges nor change in time
Q. Paper capacitor is a type of _________
a. fixed capacitor
b. variable capacitor
c. either fixed or variable depending on its usage
d. neither fixed nor variable
Q. In a variable capacitor, capacitance can be varied by ______
a. turning the rotatable plates in or out
b. sliding the rotatable plates
c. changing the plates
d. changing the material of plates
Q. The simplest kind of capacitor is ________
a. ceramic capacitor
b. electrolyte capacitor
c. tuning capacitor
d. paper capacitor
Q. The electric field intensity is defined as
a. force per unit charge
b. force on a test charge
c. force per unit charge on a test charge
d. product of force and charge