Finding magnitude and direction of net torque on a dipole

AI Thread Summary
To find the net torque on a dipole with charges of ±3.0 microcoulombs separated by 3.20 nm in an electric field of 8000 N/C, the force is calculated as F = 2.4E-2 N. The effective lever arm is determined using l = 1.84E-9 m. The net torque is then computed using the formula T = qEl, leading to the conclusion that the torque acts in a specific direction, either clockwise or counterclockwise. The calculations confirm the relationship between force, lever arm, and torque in this context. The final answer provides the magnitude and direction of the net torque on the dipole.
ick84
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Homework Statement



For the dipole shown, the charges are ± 3.0 micro coulombs separated by a distance of 3.20 nm and oriented so that the theta is 35.0 degrees. If the electric field has a magnitude of 8000 N/C, find the magnitude and direction (clockwise/counterclockwise) of the net torque on the dipole about the same axis as before.


Homework Equations



F = qE
torque = Fl

The Attempt at a Solution



first i solved for F = (3.0E-6 C)(8000N/C) = 2.4E-2 N

then solved for l = (3.20nm)(sin35) = 1.84E-9

net torque = 2 * F * l ??
 

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NVM i solved it...

T = Fl
T = qEl
 
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