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A small electric dipole is placed at ori...

A small electric dipole is placed at origin with its dipole moment directed along positive x-axis. The direction of electric field at point `(2, 2sqrt(2), 0)` is

A

along z-axis

B

along y-axis

C

along negative y-axis

D

along negative z-axis

Text Solution

Verified by Experts

The correct Answer is:
B

`tan theta=y/x=sqrt(2), cot theta=1/sqrt(2)` Also `tan alpha=(tan theta)/2=1/sqrt(2)=cot theta rArr theta+alpha=90^(@)` i.e., `vec(E)` is along positive y-axis.
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Knowledge Check

  • On the axis and on the equator of an electric dipole for all points

    A
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    B
    On both of them V = 0
    C
    On the axis V = 0 and on equator `V ne 0`
    D
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  • If electric dipole is placed in non-uniform electric field, then......

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    resultant force on dipole is 0.
    B
    torque on dipole may be 0.
    C
    resultant force on dipole may be 0.
    D
    torque on dipole is 0.

  • In electric dipole is placed in an electric field of a point charge, then........

    A
    (A) the resultant force acting on the dipole is always zero.
    B
    (B) the resultant force acting on the dipole may be zero.
    C
    (c) torque acting on it may be zero.
    D
    (D) torque acting on it is always zero.

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