An electric dipole is placed in a uniform ele | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The torque $\vec{	au}$ on an electric dipole in a uniform electric field is given by $\vec{	au} = \vec{p} 	imes \vec{E}$.The magnitude of the t

Vedclass · Accepted Answer

$1.25 	imes 10^{-28}\ C\cdot m$

Vedclass · Answer

(A) The torque $\vec{	au}$ on an electric dipole in a uniform electric field is given by $\vec{	au} = \vec{p} 	imes \vec{E}$.The magnitude of the torque is $	au = pE \sin	heta$.From the graph,the maximum torque $	au_{	ext{max}}$ is $50 	imes 10^{-28}\ N\cdot m$ (at $	heta = 90^\circ$,where $\sin	heta = 1$).Thus,$	au_{	ext{max}} = pE$.Given $E = 40\ N/C$ and $	au_{	ext{max}} = 50 	imes 10^{-28}\ N\cdot m$:$50 	imes 10^{-28} = p 	imes 40$$p = \frac{50 	imes 10^{-28}}{40}$$p = 1.25 	imes 10^{-28}\ C\cdot m$.

An electric dipole is placed in a uniform electric field $\vec{E}$ of magnitude $40\ N/C$. The graph shows the magnitude of the torque $\tau$ on the dipole versus the angle $\theta$ between the field $\vec{E}$ and the dipole moment $\vec{p}$. The magnitude of the dipole moment $\vec{p}$ is equal to:

Similar Questions

The figure shows the electric field lines around an electric dipole. Which of the arrows best represents the electric field at point $P$?

The angle between the electric field and the dipole moment at any point on the equatorial plane of an electric dipole is . . . . . . . (in $^{\circ}$)

What is an electric dipole? What is an electric dipole moment?

Write the equation for the electric field produced by an electric dipole at a point on its axial line,given the condition $r >> a$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module