Top 250+ Solved Electromagnetic Field MCQ Questions Answer
Q. Electric intensity at any point in an electric field is equal to the at thatpoint.
a. electric flux
b. magnetic flux density
c. potential gradient
d. none of the above
Q. Electric displacement is a quantity.
a. scalar
b. vector
c. both of the above
d. none of the above
Q. at a point is equal to the negative potential gradient at that point.
a. Electric intensity
b. Electric flux
c. Magnetic flux
d. Magnetic flux density
Q. Dielectric stregth______with increasing thickness
a. increases
b. decreases
c. remains unaltered
d. none of the above
Q. The property of a capacitor to store electricity is called its
a. capacitance
b. charge
c. energy
d. none of the above
Q. is that property of a capacitor which delays any change of voltageacross it.
a. Inductance
b. Capacitance
c. Potential gradient
d. None of the above
Q. A capacitance of 100 f if is connected in series with a resistance of 8000 £2. The time constant of the circuit is
a. 0.2 s
b. 0.4
c. 0.6 s
d. 0.8 s
Q. In a cable capacitor, voltage gradient is maximum at the surface of the
a. earth
b. conduction
c. sheath
d. insulator
Q. In a Spherical coordinate system, r is given as ___________.
a. (x + y + z)
b. (x2 + y2 + z2)
c. (x2 + y2 + z2)1/2
d. none
Q. Line integral involves _________ product.
a. scalar
b. vector
c. both (a) an (b)
d. none of these
Q. Del operator is ______________.
a. same as the gradient operator
b. vector differential operator
c. both (a) an (b)
d. none of these
Q. Gradient represents the __________ of maximum space rate ofincrease of a scalar field.
a. magnitude
b. direction
c. both (a) an (b)
d. none of these
Q. Divergence of a vector at a point in a vector field is __________quantity.
a. vector
b. scalar
c. both (a) an (b)
d. none of these