Q4.A dielectric slab with 500mm x 500mm cross-section is 0.4m long. The slab is
subjected to a uniform electric field of . The relative
permittivity of the dielectric material is equal to 2. The value of constant ε0 is 8.85 × 10-12 F/m. The energy stored in the dielectric in Joules is
Answer : Option BExplaination / Solution: No Explaination.
Q5.The magnitude of magnetic flux density at a point having normal distance d meters from
an infinitely extended wire carrying current of l A is (in SI units). An infinitely
extended wire is laid along the x-axis and is carrying current of 4 A in the +ve x direction.
Another infinitely extended wire is laid along the y-axis and is carrying 2 A current in the +ve
y direction µ0 is permeability of free space Assume to be unit vectors along x, y and
z axes respectively.
Assuming right handed coordinate system, magnetic field intensity, at coordinate (2,1,0)
Q7.Two semi-infinite dielectric regions are separated by a plane boundary at y=0. The
dielectric constant of region 1 (y<0) and region 2 (y>0) are 2 and 5, Region 1 has uniform
electric field are unit vectors along the x, y and
z axes, respectively. The electric field region 2 is
Q8.In cylindrical coordinate system, the potential produced by a uniform ring charge is given by φ = f(r, z), where f is a continuous function of r and z. Let be the resulting electric field. Then the magnitude of ∇ ×