As the angle of inclination of a dipole with a uniform electric field is varied from 0° to 180°, the torque acting on it will?
Answers
Answered by
0
Answer:
ANSWER
(I) Let an electric dipole is placed in a uniform electric field
E
, making an angle θ with the field ,
force on charge +q
F
+q
=+q
E
(along
E
)
force on charge −q
F
−q
=−q
E
(opposite to
E
)
as two equal and opposite forces are acting on the dipole therefore net force
F
=0
(ii) We know that work done in rotating a electric dipole from θ
1
to θ
2
, ( where θ
1
is the angle of dipole with electric field ) is given by ,
W=pE(cosθ
1
−cosθ
2
)
now given θ
1
=0,θ
2
=180
therefore W=pE(cos0−cos180)=2pE
Similar questions