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GATE 2023 EMT Rank Booster Quiz 22

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Question 1

The current density that produce the magnetic vector potential A = 2aϕ in cylindrical coordinates is

Question 2

Magnetic field intensity produced at a distance ρ from an infinite cylindrical wire located along entire z-axis is 3 ρaϕ A/m. The current density within the conductor will be …… A/m2 in az direction.

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

Question 4

Suppose we have a radiating field given by:

A/m, and it is in free space.

Now, determine the value of magnetic flux (in weber) that crosses the surface which is defined in the area given by: 0 and 0.

Question 5

Magnetic flux density and magnetic vector potential are related by

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)

Question 7

A vector field to represent a magnetic field at (1, 2, 3) the value of R should be,
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