write the expression for potential due to a dipole at a point on the centre of the dipole.Explain it's terms
Answers
Answer:
Hint: An electric dipole is a pair of two charges equal in magnitude (q) but opposite in nature (i.e. one is a positive charge and other is a negative charge). The two charges are separated by a distance of length 2a.
Formula used: V=Kqr
(1±x)n≈1±nx, if x is very much small.
Complete step by step answer:
An electric dipole is a pair of two charges equal in magnitude (q) but opposite in nature (i.e. one is a positive charge and other is a negative charge). The two charges are separated by a distance of length 2a.
An electric dipole has a quantity called its dipole moment given by P=2qa.
A sketch of an electric dipole is shown below.
Let an electric dipole with charges +q and –q lie on x-axis with the origin as the midpoint of the dipole.
Consider a point P at the coordinates (x,y). The distance of the point from origin be r making an angle θ with positive x-axis.
Electric potential due to a charge q at a point, which is at a distance r from the charge is given as V=Kqr