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An electric dipole consisting of two opp...

An electric dipole consisting of two opposite charges of `2xx10^(-6)C` each separated by a distance of `3 cm` is placed in an electric field of `2xx10^(5)N//C`. The maximum torque on the dipole will be

A

`12 xx10^(-1) Nm`

B

`12 xx10^(-3) Nm`

C

`24 xx10^(-1) Nm`

D

`24 xx10^(-3) Nm`

Text Solution

Verified by Experts

The correct Answer is:
B
Torque `(vectau) = vecp xxvecE`
`tau_(max) = pE = (2a ) qE `
`= 3xx10^(-2) xx 2 xx10^(-6) xx 2 xx10^(+5)`
`= 12 xx10^(-3) Nm`
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