EC8451 EMF - UNIT - III (MAGNETOSTATICS)

Biot Savart law in magnetic field is analogous to which law in electric field?

• Gauss law

• Faraday law

• Coulomb’s law

• Ampere law

Which of the following cannot be computed using the Biot Savart law?

• Magnetic field intensity

• Magnetic flux density

• Electric field intensity

• Permeability

Find the magnetic field of a finite current element with 2A current and height 1/2π is

• 1

• 2

• 1/2

• 1/4

Calculate the magnetic field at a point on the centre of the circular conductor of radius 2m with current 8A.

• 1

• 2

• 3

• 4

The current element of the solenoid of turns 100, length 2m and current 0.5A is given by,

• 100 dx

• 200 dx

• 25 dx

• 50 dx

The point form of Ampere law is given by

• Curl(B) = I

• Curl(D) = J

• Curl(V) = I

• Curl(H) = J

The Ampere law is based on which theorem?

• Green’s theorem

• Gauss divergence theorem

• Stoke’s theorem

• Maxwell theorem

When the rotational path of the magnetic field intensity is zero, then the current in the path will be

• 1

• 0

• ∞

• 0.5

Find the magnetic field intensity when the current density is 0.5 units for an area up to 20 units.

• 10

• 5

• 20

• 40

The divergence of which quantity will be zero?

• E

• D

• H

• B