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ESE EE : Electromagnetic fields Champion Quiz 4

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Question 1

Which one of the following is not the valid expression for magnetostatic field vector

Question 2

Equation

is based on

Question 3

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

Question 4

What is the force on a unit charge moving with velocity

in presence of electric field

and magnetic field

Question 5

Plane y = 0 carries a uniform current density

mA/m. At (1, 20, –2)m, what is the magnetic field intensity?

Question 6

How much current must flow in a loop radius 1 m to produce a magnetic field 1 mAm^–1?

Question 7

A circular loop placed perpendicular to a uniform sinusoidal magnetic field of frequency ω₁ is revolved about an axis through its diameter at an angular velocity ω₂ rad/sec (ω₂ < ω₁) as shown in the figure below. What are the frequencies for the e.m.f. induced in the loop?

Question 8

Match List-I with List-II and select the correct answer using the code given below the lists :
List – I
A. Work
B. Electric field strength
C. Manetic flux
D. Magnetic field strength
Lits – II
1) Ampere per meter
2) Weber
3) Volt per meter
4) Joule

Question 9

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 10

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

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ESE & GATE EE Electromagnetic Fields

May 12ESE & GATE EE