Q. An electric dipole of moment p is placed parallel to the uniform electric field. The amount of work done in rotating the dipole by 900 is-(i) 2pE(ii) pE(iii) pE/2(iv) Zero Answer: (ii) pE W = pE ( cosθ1– cosθ2 ) θ1 =0° θ2 = 90° W = pE (cos 0° – cos 90°) W = […]
Q. Two point charges +8q and -2q are located at x=0 and x=L respectively. The point on x axis at which net electric field is zero due to these charges is-(i) 8L(ii) 4L(iii) 2 L(iv) L Answer: (iii) 2 L
Q. Which of the following is NOT the property of equipotential surface?(i) They do not cross each other.(ii) The rate of change of potential with distance on them is zero.(iii) For a uniform electric field they are concentric spheres.(iv) They can be imaginary spheres. Answer: (iii) For a uniform electric field they are concentric spheres.
Which of the following is NOT the property of equipotential surface? Read More »