A dipole with an electric moment p is at a distance r from a uniformly charged long thread find force acting on the dipole if vector p is oriented along the thread
Asked by tandonyashika
5th June 2018,
7:15 PM
Answered by Expert
Answer:
W know that electric dipole moment is due to the charges of equal magnitude and opposite charge. Consider here the system consist of charges +q and -q
Now, the electric field due to long thread at distance r is given by,
Thus, the force acting on charge +q is F(+q)= E(+q)= 
and the force on charge - q is F(-q)= E(-q)= 
Thus the net force along thread is F(+q) + F(-q) =0
Thus F=0 along thread placed at distance r.
Answered by Expert
6th June 2018,
11:23 AM
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