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An electric dipole with dipole moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. The net force on the dipole is:
- A.
- B.
- C.Equal to $pE$
- D.Equal to $2pE$
Show correct answer & step-by-step solution
Correct answer: A —
Solution
In a uniform electric field, the force on the positive charge is and the force on the negative charge is . Since these forces are equal in magnitude and opposite in direction, their vector sum is always zero.
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