EASY
12th Assam Board
IMPORTANT
Earn 100
Describe schematically the equipotential surfaces corresponding to a constant electric field in the -direction,
Important Questions on Electrostatic Potential and Capacitance
EASY
12th Assam Board
IMPORTANT
Describe schematically the equipotential surfaces corresponding to a field that uniformly increases in magnitude but remains in a constant (say, ) direction,
EASY
12th Assam Board
IMPORTANT
Describe schematically the equipotential surfaces corresponding to a single positive charge at the origin.
EASY
12th Assam Board
IMPORTANT
Describe schematically the equipotential surfaces corresponding to a uniform grid consisting of long equally spaced parallel charged wires in a plane.
MEDIUM
12th Assam Board
IMPORTANT
A small sphere of radius and charge is enclosed by a spherical shell of radius and charge Show that if is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge on the shell is.
EASY
12th Assam Board
IMPORTANT
The top of the atmosphere is at about with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about Why then do we not get an electric shock as we step out of our house into the open? (Assume the house to be a steel cage so there is no field inside!)
EASY
12th Assam Board
IMPORTANT
A man fixes outside his house one evening a two meter high insulating slab carrying on its top a large aluminium sheet of area Will he get an electric shock if he touches the metal sheet next morning?
EASY
12th Assam Board
IMPORTANT
The discharging current in the atmosphere due to the small conductivity of air is known to be on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged?
EASY
12th Assam Board
IMPORTANT
What are the forms of energy into which the electrical energy of the atmosphere is dissipated during a lightning?
