An electric dipole of moment p is placed in the position of stable equilibrium in a uniform electric field of intensity E. The torque required to rotate, when the dipole makes an angle 0 with the initial position is
A. pE cosθ
B. pE sinθ
C. pE tanθ
D. pE cotθ
Answer:B
An electric dipole of moment p is placed in the position of stable equilibrium in a uniform electric field of intensity E. The torque required to rotate, when the dipole makes an angle 0 with the initial position is
A. pE cosθ B. pE sinθ C. pE tanθ D. pE cotθ