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Electrostatics question

2001 · Q167
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Electrostatics question

2001 · Q167

NEETPhysicsElectrostaticsMCQ+4 / −1
A dipole of dipole moment p→\overrightarrow pp​ is placed in uniform electric field E→\overrightarrow EE then torque acting on it is given by
  1. A
    τ→=p→.E→\overrightarrow \tau = \overrightarrow p .\overrightarrow Eτ=p​.E
  2. B
    τ→=p→×E→\overrightarrow \tau = \overrightarrow p \times \overrightarrow Eτ=p​×E
  3. C
    τ→=p→+E→\overrightarrow \tau = \overrightarrow p + \overrightarrow Eτ=p​+E
  4. D
    τ→=p→−E→\overrightarrow \tau = \overrightarrow p - \overrightarrow Eτ=p​−E
View written solutionFree

Correct answer: B

When an electric dipole is placed in a uniform electrical field E→\overrightarrow E E, the torque on the dipole is given by

τ→=p→×E→\overrightarrow \tau = \overrightarrow p \times \overrightarrow E τ=p​×E

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