An electric dipole consisting of two opposite | vedclass

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

Question

(C) The dipole moment $p$ is given by the product of the magnitude of one charge $q$ and the separation distance $2l$. Given: $q = 2 	imes 10^{-6}

Vedclass · Accepted Answer

$12 	imes 10^{-3} 	ext{ N-m}$

Vedclass · Answer

(C) The dipole moment $p$ is given by the product of the magnitude of one charge $q$ and the separation distance $2l$. Given: $q = 2 	imes 10^{-6} 	ext{ C}$,$2l = 3 	ext{ cm} = 3 	imes 10^{-2} 	ext{ m}$. $p = q 	imes 2l = (2 	imes 10^{-6} 	ext{ C}) 	imes (3 	imes 10^{-2} 	ext{ m}) = 6 	imes 10^{-8} 	ext{ C-m}$. The torque $	au$ on a dipole in an electric field $E$ is given by $	au = pE \sin 	heta$. For maximum torque,$	heta = 90^{\circ}$,so $\sin 90^{\circ} = 1$. $	au_{\max} = pE = (6 	imes 10^{-8} 	ext{ C-m}) 	imes (2 	imes 10^5 	ext{ N/C}) = 12 	imes 10^{-3} 	ext{ N-m}$.

An electric dipole consisting of two opposite charges of $2 \times 10^{-6} \text{ C}$ separated by a distance of $3 \text{ cm}$ is placed in an electric field of $2 \times 10^5 \text{ N/C}$. The maximum torque acting on the dipole is:

Similar Questions

$A$ point dipole $\vec{p} = -p_0\hat{x}$ is kept at the origin. The potential and electric field due to this dipole on the $y$-axis at a distance $d$ are,respectively: (Take $V = 0$ at infinity)

An electric dipole,when placed in a uniform electric field $E$,will have minimum potential energy when the angle made by the dipole moment with the field $E$ is

When does the torque acting on an electric dipole in a uniform electric field become maximum?

Two electric dipoles of moment $P$ and $27 P$ are placed on a line with their centres $24 \,cm$ apart. Their dipole moments are in opposite directions. At which point between the dipoles, measured from the centre of the dipole of moment $P$, will the electric field be zero (in $\,cm$)?

An electric dipole placed in a uniform electric field experiences maximum torque when the dipole is placed:

Vedclass Test Series

Exam Paper Generator

Online Exam Module