Physics - Electrostatics Question with Solution | TestHub
PhysicsElectrostaticsdipoleMedium2 minQB
PhysicsMediumsingle choice
A small dipole P and a fixed point charge +q are kept in free space. Net electrostatic force on dipole due to charge q is F and torque on dipole about point O is then :-
Options:
Answer:
B
Solution:
Field lines of +q at the dipole pass through O, so the forces on the dipole's charges act along lines through O - torque about O is zero for every .
But the forces on the two charges differ in magnitude (different distances) and are not exactly opposite, so . Hence (B).
Stream:JEESubject:PhysicsTopic:ElectrostaticsSubtopic:dipole
⏱ 2mℹ️ Source: QB
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