Question

the potential energy of an electric dipole of moment P in the position perpendicular to electric field is taken zero. then its potential energy at angle theta with E and P is given by​

Answer 1

Answer:

..............................

Answer 2

ELECTRIC POTENTIAL ENERGY is given by U = -E*P*cosΦ

Here let T be the tourqe , U be the ELECTRIC POTENTIAL ENERGY and Φ be the angular displacement.

•) Now we know that for small change,

dU = TdΦ .......(1)

•) Now we know that,

T = E*P*sinΦ ------(2)

Now putting the value of (2) in (1) , we get l,

dU = E*P*sinΦ*dΦ

•) Integrating both sides we get ,

U = -E*P*cosΦ

U = -EPcosΦ