Test: Magnetostatics - Electronics and Communication Engineering (ECE) MCQ

Consider the rectangular loop on z = 0 plane shown in fig. The magnetic flux density is B = 6 xu_x - 9 yu_y + 3zu_z Wb/m². The total force experienced by the rectangular loop is

Three uniform current sheets are located in free space as follows: 8u_z A/m at y = 0, -4u_z A/m at y = 1 and -4u_z A/m at y = -1. Let F be the vector force per meter length exerted on a current filament carrying 7 mA in the u_L direction.

Que: If the current filament is located at x = 0, y = 0.5 andu u_L =  u_Z , then F is

Three uniform current sheets are located in free space as follows: 8u_z A/m at y = 0, -4u_z A/m at y = 1 and -4u_z A/m at y = -1. Let F be the vector force per meter length exerted on a current filament carrying 7 mA in the u_L direction.

Que: If the current filament is located at y = 0.5, z = 0, and u_L = u_x, then F is

Two infinitely long parallel filaments each carry 100 A in the u_z direction. If the filaments lie in the plane y = 0 at x = 0 and x = 5 mm, the force on the filament passing through the origin is

A conducting current strip carrying K =  6u_z A/m lies in the x = 0 plane between y = 0.5 and y = 1.5 m. There is also a current filament of I = 5 A in the u_z direction on the z –axis.

Que: The force exerted on the filament by the current strip is

A conducting current strip carrying K =  6u_z A/m lies in the x = 0 plane between y = 0.5 and y = 1.5 m. There is also a current filament of I = 5 A in the u_z direction on the z –axis.

Que: The force exerted on the strip by the filament is

In a material the magnetic field intensity is H = 1200A/m when B = 2 Wb/m². When H is reduced to 400 A/m, B =1.4 Wb/m². The change in the magnetization M is

In a certain material for which μ_r = 6.5 ,

H = 10u_x + 25u_y - 40u_z  A/m

Que:

The magnetic susceptibility χ_m of the material is

In a certain material for which μ_r = 6.5 , H = 10u_x + 25u_y - 40u_z  A/m

Que: The magnetic flux density B is

In a certain material for which μ_r = 6.5 , H = 10u_x + 25u_y - 40u_z  A/m

Que: The magnetization M is

In a certain material for which μ_r = 6.5 , H = 10u_x + 25u_y - 40u_z  A/m

Que: The magnetic energy density is

For a given material magnetic susceptibility χ_m = 3.1 and within which B = 0.4 yu_z T.

Que: The magnetic field H is

For a given material magnetic susceptibility χ_m = 3.1 and within which B = 0.4 yu_z T.

Que: The magnetization M is

A particular material has 2.7 x 10²⁹  atoms/m³ and each atom has a dipole moment of 2.6 x 10³⁰ u_y A .m². The H in material is (μ_r = 4.2 )

In a material magnetic flux density is 0.02 Wb/m² and the magnetic susceptibility is 0.003. The magnitude of the magnetization is

A uniform field H = -600 u_y A/m exist in free space. The total energy stored in spherical region 1 cm in radius centered at the origin in free space is

The magnetization curve for an iron alloy is

approximately given by If H increases from 0 to 210 A/m, the energy stored per unit volume in the alloy is