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RVUNL EE Electromagnetic Fields Revision Quiz

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Question 1

The magnetic flux density created by an infinitely long conductor carrying a current I at a radial distance R is

Question 2

Which of the following is zero as applied to electromagnetic fields?

Question 3

A magnetic ring has a mean circumference of 20 cm and a cross-section of 20 cm² and has 800 numbers of turns of wire. When the exciting current is 5 A, the flux is 2 mWh. The relative permeability of iron is nearly

Question 4

Two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is proportional to

Question 5

The unit of magnetic flux density is

Question 6

A long straight wire carries a current I = 1 A. At what distance, the magnetic field is 1 Am^–1?

Question 7

The force on a charge moving with velocity

under the influence of electric and magnetic fields is given be which one of the following?

Question 8

Let

. Given point P(r = 0.8, θ = 30°, ϕ = 45°). Determine E at P?

Question 9

A uniform surface charge density of 20 nC/m² is present on the spherical sphere r = 0.6 cm in free space. Find the absolute potential at P(r = 1 cm, θ = 25°, ϕ = 50°) in (volts)

Question 10

A potential field in free space is expressed as

. Find the total energy stored within the cube 1 < x, y, z < 2.? (in Pj

Question 11

If the potential as a function of position is given by,

. The magnitude of electric field at the point (0.5, 0.5, 0.5) m is

Question 12

A charged particle of is shot towards another charged particle Q which is fixed, with a speed v. It approaches Q upto a closest distance r and then returns. If q were given a speed 2v, then the closest distance of approach would be,

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AE & JE Exams

Oct 26AE & JE Exams