Question

If ∫ H.dL = 0, then which statement will be true?

(a) E = -Grad(V)

(b) B = -Grad(D)

(c) H = -Grad(Vm)

(d) D = -Grad(A)

The question was asked by my college director while I was bunking the class.

Query is from Magnetic Field Density in portion Magnetostics of Electromagnetic Theory

Answer 1

Right choice is (c) H = -Grad(Vm)

The explanation is: The given condition shows that the magnetic field intensity will be the negative gradient of the magnetic vector potential.