Home
Class 12
PHYSICS
An electric dipole is placed in a unifor...

An electric dipole is placed in a uniform electric field `vec(E )` of magnitude `40N//C`. Graph shows the magnitude of the square on the dipole versus the angle `theta` between the field `vec(E )` and the dipole moment `vec(p)`. The magnitude of dipole moment `vec(p)` is equal to:

A

`2.5 xx 10^(-28)Cm`

B

`2.0 xx 10^(-25) Cm`

C

`1.25 xx 10^(-28) Cm`

D

`5.0 xx 10^(-28) Cm`

Text Solution

Verified by Experts

The correct Answer is:
C
`overset(rarr)tau=overset(rarr)pxxoverset(rarr)E`
`vectau=vecpxxvecE`
`tau_("mas")=pE`
or `50xx10^(-28)=p40` or `p=1.25xx10^(-28)C`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise Multiple Correct Answer type|109 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise Assertion and Reason Type|8 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    CENGAGE PHYSICS|Exercise Question Bank|4 Videos

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS|Exercise Integer|12 Videos

Similar Questions

Explore conceptually related problems

An electric dipole is kept inside a uniform electric field. If Fis the magnitude of net force on dipole and tau is magnitude of net torque, then

An electric dipole placed in a uniform electric field experiences maximum moment of couple when the dipole is placed

An electric dipole of dipole moment p is placed in a uniform external electric field E. Then, the

An electric dipole in a uniform electric field has potential energy U. The magnitude of the torque acting on the dipole due to the field is tau .

When an electric dipole is placed in a uniform electric field, a couple acts on it. The moment of couple will be maximum when the dipole is placed

An electric dipole when placed in a uniform electric field E will have minimum potential energy, if the positive direction of dipole moment makes the following angle with E

A dipole of dipole moment vec(P) is placed in uniform electric field vec(E) , then torque acting on it is given by