17 - Electric field & force - Electric dipole in uniform electric field

[@kb9889]

Thank you for this, I asked my lecturer a similar question in our revision session before test week. He said "study it yourself"

[@d.3935]

Excellently explained, thank you

[@ionathomas2527]

aren't we taking -q for writing torque

[@jazzchang6417]

Why is it sin(theta)?

[@ytinw6566]

cos(delta) has the same direction as the F+, thus it does not create any torque

[@umairbajwa9489]

why -QE force of torque is taken positive?

[@CogverseAcademy]

because it causes a clockwise rotation and clockwise is defined as the positive direction for rotation.

[@CogverseAcademy]

umair bajwa because we just want the magnitude (which is qE) to compute the torque.

[@sherinafroze2950]

Great tutorial, though why is qEsin(theta) instead of qEcos(theta) of the torgue acting due to dipole?