How Is Torque Calculated on a Dipole in an Electric Field?

AI Thread Summary
The discussion focuses on calculating the torque on a dipole in a uniform electric field with a moment of 0.50 e · nm and a field strength of 8.0 x 10^4 N/C. When aligned with the electric field, the torque is 0 N · m, while the torque when perpendicular to the field needs to be calculated. Additionally, the torque for an angle of 29.5° with the electric field is also to be determined. The potential energy of the dipole is defined as zero when transverse to the field, and calculations for potential energy at both specified angles are required. The relevant equation for torque on a dipole in an electric field is dqE = pE.
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Homework Statement



A dipole of moment 0.50 e · nm is placed in a uniform electric field with a magnitude of 8.0 104 N/C. What is the magnitude of the torque on the dipole for each of the following situations?

(a) the dipole is aligned with the electric field
0. N · m (this is correct)

(b) the dipole is transverse to (perpendicular to) the electric field
__________. N · m

(c) the dipole makes an angle of 29.5° with the direction of the electric field
_______ N · m

(d) Defining the potential energy to be zero when the dipole is transverse to the electric field, find the potential energy of the dipole in the electric field for the orientations specified in Parts (a) and (c).
θ = 0°, U = _________

θ = 29.5°, U = _________ J

Homework Equations





The Attempt at a Solution

 
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What is the relevant equation for the torque on a dipole in an electric field?
 
dqE = pE
 
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