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  • Two charges +1000 micro coulomb and -1000 micro coulomb are separated by 2 mm .This dipole so formed is held at an angle 30 degree with uniform electric field of 15×10^4 N/c . Calculate the torque acting on a dipole

Two charges +1000 micro coulomb and -1000 micro coulomb are separated by 2 mm .This dipole so formed is held at an angle 30 degree with uniform electric field of 15×10^4 N/c . Calculate the torque acting on a dipole

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best_answer

As torque=\tau =PEsin\theta

where P=dipole moment

and P=q*2a=1000*10^{-6}*2*10^{-3} =2*10^{-6}

using \theta =30^0 \ \ we \ get \ sin\theta =\frac{1}{2}

and using E=15*10^4 

we get \tau =2*10^{-6}*\frac{1}{2}*15*10^4=15*10^{-2} \ N-m

Posted by

avinash.dongre

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