An electric dipole with dipole moment 5 times | vedclass

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

Question

(B) Given:Dipole moment $p = 5 	imes 10^{-6} \ Cm$Electric field $E = 4 	imes 10^5 \ N/C$Initial angle $	heta_{i} = 0^{\circ}$Final angle $	heta_{

Vedclass · Accepted Answer

$1.0$

Vedclass · Answer

(B) Given:Dipole moment $p = 5 	imes 10^{-6} \ Cm$Electric field $E = 4 	imes 10^5 \ N/C$Initial angle $	heta_{i} = 0^{\circ}$Final angle $	heta_{f} = 60^{\circ}$The potential energy of an electric dipole in an electric field is given by $U = -pE \cos 	heta$.The change in potential energy is $\Delta U = U_{f} - U_{i}$.$\Delta U = (-pE \cos 	heta_{f}) - (-pE \cos 	heta_{i})$$\Delta U = pE (\cos 	heta_{i} - \cos 	heta_{f})$Substituting the values:$\Delta U = (5 	imes 10^{-6}) 	imes (4 	imes 10^5) 	imes (\cos 0^{\circ} - \cos 60^{\circ})$$\Delta U = 20 	imes 10^{-1} 	imes (1 - 0.5)$$\Delta U = 2 	imes 0.5 = 1 \ J$.

Similar Questions

$A$ system has two charges $q_{A} = 2.5 \times 10^{-7} \; C$ and $q_{B} = -2.5 \times 10^{-7} \; C$ located at points $A: (0, 0, -15 \; cm)$ and $B: (0, 0, +15 \; cm)$,respectively. What are the total charge and electric dipole moment of the system?

The force on a charge situated on the axis of a dipole is $F$. If the charge is shifted to double the distance,the new force will be

$A$ given charge situated at a distance $r$ from an electric dipole on its axis experiences a force $F$. If the distance of the charge from the dipole is doubled,the force acting on the charge will be

The electric field at a point on the equatorial plane at a distance $r$ from the centre of a dipole having dipole moment $\overrightarrow{p}$ is given by,($r >>$ separation of two charges forming the dipole,$\varepsilon_{0}$ - permittivity of free space)

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

Vedclass Test Series

Exam Paper Generator

Online Exam Module