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lidiya [134]
3 years ago
12

What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to e⃗

from parallel to perpendicular?
Physics
1 answer:
AleksandrR [38]3 years ago
8 0

Electric potential energy of a dipole is given as

U = - P.E

U = - PE cos\theta

so change in the potential energy is given by

U_f - U_i = (-PEcos\theta_2)- (-PEcos\theta_1)

\Delta U = PE (cos\theta_1 - cos\theta_2)

here initially it was parallel to electric field while finally it is perpendicular to the electric field

so we have

\Delta U = PE(cos 0 - cos 90)

\Delta U = PE

so above is the change in potential energy of dipole

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\frac{50}{\pi }Hz

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<u><em>Now,</em></u>

From the question,

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<em><u>By comparing equations (i) and (ii) the following holds;</u></em>

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