d and e pleease An electric dipole consists of charges +2e and -2e separated by

Question

d and e pleease An electric dipole consists of charges +2e and -2e separated by 1.0nm. It is in an electric field of strength 3.0 times 10^N/C. The dipole moment vector, p vector, makes an angle theta with respect to the direction of the electric field, as in the figure. a) What is the magnitude of the dipole moment? b) What is the magnitude of the torque on the dipole when the dipole moment is parallel to the electric field (theta = 0 deg)? c) What is the magnitude of the torque on the dipole when the dipole moment is at theta = 90 degrees to the electric field? Does the torque rotate the dipole clockwise or counterclockwise? d) What is the magnitude of the torque on the dipole when the dipole moment is at theta = 270 degrees to the electric field? Does the torque rotate the dipole clockwise or counterclockwise? e) What is the potential energy of the dipole when the angle theta = 180 degrees?

Explanation / Answer

d)given elcctric field is E=3x10^6N/c

charge(Q)=2e=2x1.6x10^-19coulomb

distance between the charges=1nm=10^-9m

torque acting on the diole=PxE

=pEsintheta

=qdEsin270

=2x1.6x10^-19x10^-9x3x10^6sin270

=-9.6x10^-22Nm

here the torque acting on the dipole is clockwise

e)potential stored in the dipole is =p.E

= pEcos theta (theta=180)

=qdEcos180

=(2x1.6X10^-19x10-9x3x10^6cos180)

=-9.6x10^-22J

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.