Question

An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90° is(a) pE²(b) p²E(c) pE(d) infinity

Answer 1

An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90° is(a) pE²(b) p²E(c) pE(d) infinity

Ans. Correct Answer:

p E

Explanation:

When electric dipole is aligned parallel θ = 0⁰ and the dipole is rotated by 90⁰ i.e., θ = 90⁰

Energy required to rotate the dipole W = Uⱼ – Uᵢ = (- pE cos 90⁰) – ( – pE cos 0⁰) = pE

So mark as BRAINLIEST please.

Answer 2

Answer:

option c is the correct answer