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Physics Question on electrostatic potential and capacitance

A dipole of dipole moment p→\overrightarrow{ p} is placed in uniform electric field E→ \overrightarrow{ E} then torque acting on it is given by

A

τ→=p→⋅E→ \overrightarrow{\tau} = \overrightarrow{p} \cdot \overrightarrow{E}

B

τ→=p→×E→ \overrightarrow{\tau} = \overrightarrow{p} \times \overrightarrow{E}

C

τ→=p→+E→ \overrightarrow{\tau} = \overrightarrow{p} + \overrightarrow{E}

D

τ→=p→−E→\overrightarrow{\tau} = \overrightarrow{p} - \overrightarrow{E}

Answer

τ→=p→×E→ \overrightarrow{\tau} = \overrightarrow{p} \times \overrightarrow{E}

Explanation

Solution

When an electric dipole is placed in a uniform electrical field E→ \overrightarrow{E}, the torque on the dipole is given by τ→=p→×E→ \overrightarrow{\tau} = \overrightarrow{p} \times \overrightarrow{E}