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GATE 2020 || Electromagnetic Theory || Quiz 6
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Question 1
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 2
If the magnetic flux through each turn of the coil consisting of 200 turns is (t2 – 3t) milli-Webers, where t is in econds, then the induced emf in the coil at t = 4 sec is
Question 3
Magnetic field intensity is
What is the current density
A/m2?
What is the current density
A/m2? Question 4
The vector magnetic potential of a particular wave travelling in free space is given by
where Ax is a constant .The expression for the electric field will be
where Ax is a constant .The expression for the electric field will be Question 5
Certain current distribution gives rise to the vector magnetic potential
Wb/m.The flux through the surface defined by 
is ______ Wb.
Wb/m.The flux through the surface defined by is ______ Wb.Question 6
A vector field 
to represent a magnetic field at (1, 2, 3) the value of R should be,
to represent a magnetic field at (1, 2, 3) the value of R should be,- 374 attempts
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