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2 cards from this section. Quick, good the night before a test.
What is a dipole?
Think about the definition involving charges.
What is torque in the context of electric dipoles?
Recall the formula t = p × E.
What happens to a dipole in a uniform electric field?
Consider the effects of the electric field on dipoles.
True or False: Potential energy can vary depending on the reference angle chosen.
Think about how potential energy is defined.
A dipole with a moment of 2x10^-29 C m is placed in an electric field of 3 x 10^5 V/m. Calculate the torque it experiences at an angle of 30 degrees.
Use the sine function with the angle in radians.
If a dipole's angle changes from 90° to 45°, calculate the change in potential energy for a dipole in an electric field of 10^6 V/m.
Start by recalling the potential energy formulas.
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