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CBSE Class 12-science Answered

Hello respected sir, can please help me with this problem two charge +1000 micro coulomb and -1000 micro colomb are separated by 2 meter. the dipole so formed is held at an angle 30° with uniform electric field of 15×10^4N/C. calculate the torque acting on dipole. Thank you sir
Asked by Priyamcks007 | 08 Apr, 2020, 03:30: AM
answered-by-expert Expert Answer

Figure shows the dipole that is oriented with electric field by an angle 30°
 
Torque τ acting on dipole  is given by,  begin mathsize 14px style tau with rightwards arrow on top space equals space p with rightwards arrow on top space cross times space E with rightwards arrow on top end style , where p  =  (q l )  is dipole moment and E is electric field intensity
hence |τ| = ( q l E ) sinθ = ( 1000 × 10-6 × 2 × 15 × 104 ) (1/2) = 150 N-m 
 
θ is angle between electric field intensity and dipole
Answered by Thiyagarajan K | 08 Apr, 2020, 08:04: AM

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