Q1:

For a test charge placed at infinity, the electric field will be

Q2:

In electromagnetic waves, the electric field will be perpendicular to which of the following?

Q3:

The potential difference in an open circuit is

Q4:

Find the current density of a material with resistivity 20 units and electric field intensity 2000 units.

Q5:

Find the potential due the dipole when the angle subtended by the two charges at the point P is perpendicular.

Q6:

Six equal point charges Q = 10nC are located at 2,3,4,5,6,7m. Find the potential at origin

Q7:

The potential due to the dipole on the midpoint of the two charges will be

Q8:

A point charge 0.4 nC is located at (2, 3, 3). Find the potential differences between (2, 3, 3)m and (-2, 3, 3)m due to the charge.

Q9:

Find the potential of $V=60\sin \frac{\theta }{r^2}$ at P(3,60,25)

Q10:

Given E = 40xy i + 20x² j + 2 k. Calculate the potential between two points (1,-1,0) and (2,1,3)

Q11:

The total charge of a surface with densities 1,2,…,10 is

Q12:

If the potential is given by, $V=10\sin \theta \cos \left(\frac{\phi }{r}\right)$, find the density at the point $P(2,\pi /2,0)$(in 10^-12 units)

Q13:

A cable of core radius 1.25cm and impregnated paper insulation of thickness 2.13cm and relative permittivity 3.5. Compute the capacitance of the cable/km(in nF)

Q14:

Find the velocity of an electron when its kinetic energy is equal to one electron volt (in 10⁵m/s). Given charge of an electron e = 1.6 x 10^-19 and mass of an electron m = 9.1 x 10^-31.

Q15:

Calculate the energy in an electric field with permittivity of 56 and field intensity of $36\pi J$(in $\mu$J)