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Class 12 · Physics
→If two identical isolated metal spheres carrying a total charge are brought into contact and allowed to reach electrostatic equilibrium, why is the final charge on each sphere equal?
Class 12 · Physics
→Two isolated conducting spheres have radii \(R_1\) and \(R_2\). They are far apart and are connected by a thin conducting wire. If the system has a non-zero total charge, what is the ratio of charges \(q_1\) and \(q_2\) on the spheres at electrostatic equilibrium?
Class 12 · Physics
→A metal casing of an electrical appliance may acquire charge due to leakage. What is the correct purpose of earthing it?
Class 12 · Physics
→After being charged, when a conductor reaches electrostatic equilibrium and becomes equipotential, what does it mean?
Class 12 · Physics
→In electrostatic equilibrium, at which part of an irregularly shaped charged conductor is the surface charge density greatest?
Class 12 · Physics
→In electrostatic equilibrium, why is the electric field due to an external static charge zero inside the empty cavity of a closed conducting vessel?
Class 12 · Physics
→If the potential is different at different points inside a conductor, what will happen?
Class 12 · Physics
→Why can wet wood be more electrically conductive than dry wood?
Class 12 · Physics
→Extra charge is placed on a small region of a neutral solid insulator. What is the most likely result because its charge carriers are bound?
Class 12 · Physics
→In electrostatic equilibrium, what is the value of the electric-field energy density within the material of an ideal conductor?
Class 12 · Physics
→Can an isolated conductor remain electrically neutral overall even when positive and negative induced charges are separated over different parts of its surface?
Class 12 · Physics
→In electrostatic equilibrium, what does a non-zero normal component of the electric field just outside a conductor surface indicate?
Class 12 · Physics
→An initially neutral, isolated conductor is brought near a charged rod, but it is neither touched nor grounded. Which statement about the conductor’s net charge is correct?
Class 12 · Physics
→Why must the earth connection be removed before removing the charged inducing body during charging by induction?
Class 12 · Physics
→For a conductor in electrostatic equilibrium in vacuum, if the local surface charge density increases, what happens to the magnitude of the electric field just outside the surface?
Class 12 · Physics
→Why can a metal mesh reduce the effect of an external electrostatic field in the region inside it?
Class 12 · Physics
→Attraction is possible when a charged rod is brought near an insulator because what can happen at the nearer part?
Class 12 · Physics
→In electrostatic equilibrium, excess charge spreads over the surface of a conductor, whereas charge in an insulator generally remains localized. What best explains this difference?
Class 12 · Physics
→Why are sensitive devices kept inside a closed conducting enclosure for electrostatic shielding?
Class 12 · Physics
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