Top 250+ Solved Electromagnetic Field MCQ Questions Answer
Q. When the dielectric is homogeneous,the potential gradient is
a. uniform
b. non-uniform
c. zero
d. any of the above
Q. The potential gradient across the material of low permittivity is than across the material of high permittivity.
a. smaller
b. greater
c. both (a) and (b)
d. none of the above
Q. field is associated with the capacitor.
a. Electric
b. Magnetic
c. Both (a) and (b)
d. None of the above
Q. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is
a. 50 joules
b. 150 joules
c. 200 joules
d. 250 joules
Q. A single core cable used on 33000 V has conductor diameter 10 mm and the in¬ternal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
a. 62 x 105 V/m
b. 72 x 105 V/m
c. 82 x 105 V/m
d. 92 x 105 V/m
Q. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is
a. 0.56 x 1015 m/s2
b. 1.5 x 1015 m/s2
c. 1.6 x 1015 m/s2
d. 1.76 x 1015 m/s2
Q. The total deficiency or excess of electrons in a body is known as
a. current
b. voltage
c. potential gradient
d. charge
Q. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
a. pholoelectric effect
b. chemical effect
c. magnetic effect
d. induction
Q. The number of Faraday tubes of flux passing through a surface in anelectric field is called
a. electric flux
b. electric flux density
c. magnetic flux density
d. electric charge density
Q. The value of E within the field due to a point charge can be found withthe help of
a. Faraday's laws
b. Kirchhoff s laws
c. Coulomb's laws
d. none of the above
Q. at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
a. Electric intensity
b. Magnetic flux density
c. Electric flux
d. None of the above