Question

Magnetic vector potential is a vector

(a) Whose curl is equal to the magnetic flux density

(b) Whose curl is equal to the electric field intensity

(c) Whose divergence is equal to electric potential

(d) Which is equal to the vector product E x H

I had been asked this question in an international level competition.

Query is from Advanced and Tricky Questions in portion Advanced and Tricky Questions of Electromagnetic Theory

Answer 1

Right choice is (a) Whose curl is equal to the magnetic flux density

The explanation: The magnetic vector potential is A. The curl of A is a vector and it is equal to the magnetic flux density. It is given by Curl(A) = B.