Search questions
Use text search or combine filters to find exactly the questions you need.
Class 12 · Physics
→Why is external work needed to rotate a dipole from parallel to perpendicular orientation in an electric field?
Class 12 · Physics
→Dipole moment is antiparallel to the field. Even though torque is zero at that instant, why is the position unstable?
Class 12 · Physics
→Dipole moment is at sixty degrees to the electric field. Why will torque not be zero?
Class 12 · Physics
→Dipole moment becomes three times and electric field becomes half. At the same angle, what is the torque compared to before?
Class 12 · Physics
→Dipole moment is doubled and electric field is tripled. At the same angle, what happens to torque?
Class 12 · Physics
→The net charge inside a closed surface is tripled and the shape of the surface is also changed. What happens to net flux?
Class 12 · Physics
→If the angle between field and area vector changes from thirty degrees to sixty degrees while field and area remain same, how does flux change?
Class 12 · Physics
→Why does only the normal component of electric field contribute to flux through a surface?
Class 12 · Physics
→For a closed surface, taking the area vector outward makes which interpretation easier?
Class 12 · Physics
→Why is it necessary to choose an area vector for an open surface?
Class 12 · Physics
→A surface has area vector toward north and electric field toward south. What is the sign of flux?
Class 12 · Physics
→Only the positive charge of a dipole is inside a closed surface. If the surface is enlarged to include the negative charge too, how does net flux change?
Class 12 · Physics
→A complete electric dipole is inside a closed surface. The net flux is zero, yet why can an electric field exist on the surface?
Class 12 · Physics
→If a closed surface is changed from a sphere to an irregular surface while the enclosed net charge remains the same, why does the total flux remain the same?
Class 12 · Physics
→A charge inside a closed surface is moved from the centre to near the surface, but it remains inside. How does the total flux change?
Class 12 · Physics
→A positive charge is placed at the centre of a cube. By symmetry, what fraction of the total flux passes through one face?
Class 12 · Physics
→The net flux through a closed surface is zero, yet an electric field exists at different parts of the surface. What is the correct conclusion?
Class 12 · Physics
→A closed surface contains a positive net charge, while several large negative charges are outside it. What is the sign of the net flux?
Class 12 · Physics
→The flux through a surface is initially positive. If only the direction of the area vector is reversed, what will be the new flux?
Class 12 · Physics
→