An electric dipole of moment 'p' is placed in an electric field of intensity 'E'. The dipole acquires a position such that the axis of the dipole makes an angle with the direction of the field. Assuming that the potential energy of the dipole to be zero when
= 90°, the torque and the potential energy of the dipole will respectively be:
p E sin, - p E cos
p E sin, - 2 p E cos
p E sin, - 2 p E cos
p E cos, - p E cos
As we discussed in
Torque,
Potential energy
Option 1)
p E sin, - p E cos
This option is correct.
Option 2)
p E sin, - 2 p E cos
This option is incorrect.
Option 3)
p E sin, - 2 p E cos
This option is incorrect.
Option 4)
p E cos, - p E cos
This option is incorrect.
Ask your Query
Register to post Answer