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GATE EE 2021 : Electromagnetic theory Quiz 4
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Question 1
Biot–Savart law is the magnetic equivalent of Coulomb’s law. The difference is
Question 2
The relation between the magnetic vector potential 
and the magnetic field intensity 
can be given by
and the magnetic field intensity can be given by
Question 3
In a spherical co-ordinate system magnetic vector potential at point (r, θ, ϕ) is given as A = 12 cosθaϕ. The magnetic flux density at point (3, 0, 
) will be
) will beQuestion 4
A vector magnetic potential is given by
The magnetic flux density at (2, π, 0) will be
Question 5
Find the flux density at B| (3,
) if the given magnetic vector potential A= 8sin
sphericalco-ordinates?
) if the given magnetic vector potential A= 8sin sphericalco-ordinates? Question 6
A magnetic material has the following parameters:
(i) M=120A/m and μ= 2 x 10-4H/m.
(ii) B=200μT, Xm= 15
Determine magnetic field intensity and magnetic flux density for both (i) and (ii)
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Nov 1ESE & GATE EE
