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Consider the following statements about ...

Consider the following statements about electric dipole and select the correct ones
`S_1` : Electric dipole moment vector p is directed from the negative charge to the positive charge.
`S_2` : The electric field of a dipole at a point with position vector `|vecr|` depends on `1/r^2` as well as the angle between `vecr and vecp`
S3 : The electric dipole potential falls off as `1/r^2` and not as `1/r`
S4 : In a uniform electric field, the electric dipole experiences no net forces but a torque `taur = vecp xxvecE`

A

S2, S3 and S4

B

S3 and S4

C

S2 and S3

D

All four

Text Solution

Verified by Experts

The correct Answer is:
D
`E=p/(4pi epsilon_0) ((sqrt3 cos^2 theta+1))/r^3 , r gt gt a`
`V =(Kp cos theta)/r^2`
`vectau = vecp xxvecC` but `F_("net") = 0` (For uniform E)
`vecp=q(2a)` (-vecharged to +ve charge).
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Consider the following statements about electric dipole and select the correct ones. S_(1) : Electric dipole moment vector vec(p) is directed from the negative charge to the positive charge S_(2) : The electric field of a dipole potential falls off as (1)/(r^(2)) and not as (1)/(r ) S_(3) : The electric field of a dipole at a point with position vector vec(r ) depends on |vec(r )| as well as s angle between vec(r ) and vec(p) S_(4) : In a uniform electric field, the electric dipole experience no net force but a torque

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