Solve Study Textbooks Guides

Use app

Login

>>Class 12
>>Physics
>>Electric Charges and Fields
>>Electric Dipole
>> $For the situation shown in the figure (a$

Question

For the situation shown in the figure (assume $r > >$ length of dipole) mark out the correct statement(s):

75180

This question has multiple correct options

A

Force acting on the dipole is zero

B

Force acting on the dipole is approximately $\frac{P Q}{4 π ε _{0} r ^{3}}$ and is acting upward

C

Torque acting on the dipole is $\frac{P Q}{4 π ε _{0} r ^{2}}$ in clockwise direction

D

Torque acting on the dipole is $\frac{P Q}{4 π ε _{0} r ^{2}}$ in anti-clockwise direction

Hard

Open in App

Updated on : 2022-09-05

Solution

Verified by Toppr

Correct options are B) and C)

The force on charge due to dipole $= Q E_{d i p o l e} = k Q p / r^{3}$ downwards.
By Newton's third law, every action has an equal and opposite reaction. Therefore the force on dipole due to Q is $k Q p / r^{3}$ upwards.
Also,
torque $= p \times E = p \hat{j} \times k Q / r^{2} \hat{i} = - k p Q / r^{2} \hat{k}$

Solve any question of Electric Charges and Fields with:-

Patterns of problems

Was this answer helpful?

0

0

Similar questions

There exists a non-uniform electric field along x-axis as shown in the figure.The field increases at a uniform rate along $+$ ve x-axis. a dipole is placed inside the field as shown. Which one of the following is correct for the dipole?

195813

An electric dipole is placed perpendicular to an infinite line of charge at some distance as shown in figure. Identify the correct statement.

222280

Which of the following is not correct?

Four points a, b, c and d are set at equal distance from the centre of a dipole as shown the figure. The electrostatic potential $V_{a}, V_{b}, V_{c}$ , and $V_{d}$ would satisfy the following relation :

199823

A small electric dipole having dipole moment $p$ is placed along X-axis, as shown in the figure. A semi-infinite uniformly charged di-electric thin rod placed along x axis, with one end coinciding with origin. If linear charge density of rod is $+ λ$ and distance of dipole from rod is 'a', then calculate the electric force acting on dipole.

120551

More From Chapter

Electric Charges and Fields

View chapter >

Revise with Concepts

Field Due to Electric Dipole

ExampleDefinitionsFormulaes

Torque on a Dipole Placed in an Electric Field

ExampleDefinitionsFormulaes

Learn with Videos

Introduction to Electric Dipole and Electric Dipole Moment

Electric Field Due to a Dipole (Axial Point)

Electric Field Due to a Dipole (Equatorial Point)

Electric Field due to Dipole at Any Point (Polar Coordinate)

Dipole in Uniform Magnetic Field

Torque on Dipole due to Constant Electric Field

Practice more questions

JEE Mains Questions

JEE Advanced Questions

AIIMS Questions

BITSAT Questions

Shortcuts & Tips

Common Misconceptions

Important Diagrams

Problem solving tips

Memorization tricks