1. If two conducting sphere are connected after charging separately then ? Electrostatic energy energy and charge remains conserved Electrostatic energy sphere energy will remain conserved Electrostatic energy charges remains conserved None Answer: Electrostatic energy charges remains conserved Explanation: View Answer Discuss in Forum Report Question

 2. Charge is the property associated with matter due to which it produces and experiences ? magnetic effects only both electric and magnetic effects electric effects only None of these Answer: both electric and magnetic effects Explanation: View Answer Discuss in Forum Report Question

 3. Quantisation of charge was experimentally demonstrated by ? Millikan’s oil drop experiment Davisson and Germer experiment Frank-Hertz experiment Einstein’s photoelectric effect Answer: Millikan’s oil drop experiment Explanation: View Answer Discuss in Forum Report Question

 4. Electric lines of force about a negative point charge are ? radial, outwards radial, inwards circular anticlockwise circular clockwise Answer: radial, inwards Explanation: View Answer Discuss in Forum Report Question

 5. Gauss's law is valid for ? only irregular open surfaces any open surface any closed surface only regular close surfaces Answer: any closed surface Explanation: View Answer Discuss in Forum Report Question

 6. In non-uniform electric field, electric dipole experiences ? force only None of these torque only torque as well as net force Answer: torque as well as net force Explanation: View Answer Discuss in Forum Report Question

 7. The surface considered for Gauss’s law is called ? Plane surface Gaussian surface Closed surface Spherical surface Answer: Gaussian surface Explanation: View Answer Discuss in Forum Report Question

 8. A point charge +q is placed at a distance d from an isolated conducting plane. The field at a point P on the other side of the plane is ? directed radially towards the point charge. directed radially away from the point charge. directed perpendicular to the plane and away from the plane. directed perpendicular to the plane but towards the plane. Answer: directed perpendicular to the plane and away from the plane. Explanation: The electric field lines are away from positive charge and perpendicular to the surface. Hence the field at a point P on the other side of the plane is directed perpendicular to the plane and away from the plane. View Answer Discuss in Forum Report Question

 9. The unit of electric dipole moment is ? farad coulomb-meter newton coulomb Answer: coulomb-meter Explanation: The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity. The SI unit for electric dipole moment is the coulomb-meter (C?m). View Answer Discuss in Forum Report Question

 10. A soap bubble is given a negative charge, then its radius ? decreases may increase or decrease remains unchanged increases Answer: increases Explanation: View Answer Discuss in Forum Report Question