Top 350+ Solved Electromagnetics MCQ Questions Answer
Q. Find the divergence of the vector F= xe-x i + y j – xz k
a. (1 – x)(1 + e-x)
b. (x – 1)(1 + e-x)
c. (1 – x)(1 – e)
d. (x – 1)(1 – e)
Q. Find whether the vector is solenoidal, E = yz i + xz j + xy k
a. yes, solenoidal
b. no, non-solenoidal
c. solenoidal with negative divergence
d. variable divergence
Q. Find the divergence of the field, P = x2yz i + xz k
a. xyz + 2x
b. 2xyz + x
c. xyz + 2z
d. 2xyz + z
Q. Identify the nature of the field, if the divergence is zero and curl is also zero.
a. solenoidal, irrotational
b. divergent, rotational
c. solenoidal, irrotational
d. divergent, rotational
Q. The curl of curl of a vector is given by,
a. div(grad v) – (del)2v
b. grad(div v) – (del)2v
c. (del)2v – div(grad v)
d. (del)2v – grad(div v)
Q. Which of the following theorem use the curl operation?
a. green’s theorem
b. gauss divergence theorem
c. stoke’s theorem
d. maxwell equation
Q. Find the curl of A = (y cos ax)i + (y + ex)k
a. 2i – ex j – cos ax k
b. i – ex j – cos ax k
c. 2i – ex j + cos ax k
d. i – ex j + cos ax k
Q. Find the curl of the vector A = yz i + 4xy j + y k
a. xi + j + (4y – z)k
b. xi + yj + (z – 4y)k
c. i + j + (4y – z)k
d. i + yj + (4y – z)k
Q. Curl cannot be employed in which one of the following?
a. directional coupler
b. magic tee
c. isolator and terminator
d. waveguides
Q. Which of the following Maxwell equations use curl operation?
a. maxwell 1st and 2nd equation
b. maxwell 3rd and 4th equation
c. all the four equations
d. none of the equations