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An electric dipole of dipole moment 2xx...

An electric dipole of dipole moment `2xx10^(-10)` coulomb is placed between parallel plate capacitor (see figure) having plate separation 2 cm and charged upto 100 V. Potential energy of the dipole will be -

A

`-10^(-6)J`

B

`-10^(-5)J`

C

`-10^(-4)J`

D

`-10^(-2)J`

Text Solution

Verified by Experts

The correct Answer is:
A
Angle between `vecP and vecE` is `o^(o)`
`:.U=-PE cos o^(0)`
`= -P((V)/(d))`
`= -2 xx 10^(-10) xx (100)/(2xx10^(-2))`
`= -10^(-6)` Joule
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