Question

The electric field at a point on the axial line at a distance of 0.1m from the centre of an electric dipole is 3.75×100000N/C in air ,while at a distance of 0.2m,the electric field is 3×10000N/C. Calculate the length of the electric dipole ?

Answer 1

Answer:

Point P is on the axial line with respect to pcosθ. So, electric field intensity at P due to short dipole is given by:Since, E1 and E2 are perpendicular to each other, so the resultant electric field intensity is given by: This is the expression for electric field due to dipole at any point.