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An electric dipole with dipole moment $p = 4 \times 10^{-9} \text{ C m}$ is placed in a uniform electric field $E = 200 \text{ N/C}$ at an angle $\theta = 30^\circ$. Calculate the torque $\tau$ experienced by the dipole.
- A.$4 \times 10^{-7} \text{ N m}$
- B.$8 \times 10^{-7} \text{ N m}$
- C.$2 \times 10^{-7} \text{ N m}$
- D.$6 \times 10^{-7} \text{ N m}$
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Correct answer: A — $4 \times 10^{-7} \text{ N m}$
Solution
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