An electric dipole with dipole moment 4 × ...

NCERT Class XII Chapter
Electric Charges and Fields
Questions With Solutions

Question : 10 of 34

Marks: +1, -0

An electric dipole with dipole moment 4 ×

10^{-9}

C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 ×

10^4

C^{-1}

Calculate the magnitude of the torque acting on the dipole.

Solution:

Torque on dipole is, τ = pE sin 30°

or τ = 4 ×

10^{-9}

× 5 ×

10^4 \times \frac{1}{2}

or τ = 10 ×

10^{-5}

or τ = 1 ×

10^{-4}

N m

Go to Question:

Prev Question

Next Question