An electric dipole of moment ‘p’ is placed in an elecatric field of intensity ‘E’

⇦

⇨

An electric dipole of moment ‘p’ is placed in an electric field of intensity ‘E’. The dipole acquires a position such that the axis of the dipole makes an angle θ with the direction of the field. Assuming that the potential energy of the dipole to be zero when = 90⁰, the torque and the potential energy of the dipole will respectively be:

Options

(a) p E sin θ, – p E cos θ
(b) p E sin θ, – 2 p E cos θ
(c) p E sin θ, p E cos θ
(d) p E cos θ, – p E sin θ

Correct Answer:

p E sin θ, – p E cos θ

Explanation:

The torque on the dipole is given as ? = p E sin θ. The potential energy of otghe dipole in the electric field is given as U = – p E cos θ.

Related Questions:

1. A particle is executing the motion x=Acos (ωt-θ). The maximum velocity of the particle is
2. A man goes 10 m towards north, then 20m towards east, the displacement is
3. Four cells, each of emf E and internal resistance r, are connected in series across
4. If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A
5. A current of 5 A is passing through a metallic wire of cross-sectional area 4×10⁻⁶ m².

Topics: Electrostatics (146)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends