Question

solve this question.​

Answer 1

Answer:

E=2

Explanation:

Force applied is given by q*E

torque due to this must be E*xdx*10

the torque is balanced by the torque of gravity as mg*l/2

byintegrating xdx we get l^2 /2

by solving we got E*10*l = mg

then E*10*1 =20

hence E =2