87. Eq. 22-35 τθ=−pEsinbgcaptures the sense as well as the magnitude of the effect. That is, this is a restoring torque, trying to bring the tilted dipole back to its aligned equilibrium position. If the amplitude of the motion is small, we may replace sin θwith in radians. Thus, τ≈−pE.Since this exhibits a simple negative proportionality to the
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