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Question : 5
Total: 8
(i) Obtain the expression for the torque
(ii) What will happen if the field were not uniform?
(ii) What will happen if the field were not uniform?
Solution:
(i) Obtaining of the expression for torque experienced by an electric dipole
(ii) Effect of non-uniform electric field
(i)
Force on+ q ,
= q
Force on− q ,
= − q
Magnitude of torque
τ = q E × 2 a s i n θ
= 2 q a E s i n θ
=
×
(ii) If the electric field is non uniform, the dipole experiences a translatory force as well as a torque.
(ii) Effect of non-uniform electric field
(i)
Force on
Force on
Magnitude of torque
(ii) If the electric field is non uniform, the dipole experiences a translatory force as well as a torque.
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