EASY
12th CBSE
IMPORTANT
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Why is it that a man sitting in an insulated metal cage does not receive any shock when it is connected to a high voltage supply?

Important Questions on Electrostatic Potential and Capacitance

EASY
12th CBSE
IMPORTANT
A large hollow metallic sphere A is charged positively to a potential of 100 volt and a small sphere B to a potential of 50 volt. Now B is placed inside A and they are connected by a wire. In which direction will the charge flow?
EASY
12th CBSE
IMPORTANT
Why should the radius of the sphere of a Van de Graaff generator be sufficiently large?
EASY
12th CBSE
IMPORTANT
Why is Van de Graaff generator enclosed inside an earth connected steel tank filled with air under pressure?
EASY
12th CBSE
IMPORTANT
Why is there loss of energy when two charged conductors at different potentials are connected by a conducting wire?
EASY
12th CBSE
IMPORTANT
During lightning, it is safest to sit inside a car rather than near a tree. Why?
EASY
12th CBSE
IMPORTANT
Is there some way of producing high voltage on your body without getting a shock?
EASY
12th CBSE
IMPORTANT
Two metallic spheres of radii R and 2 R are charged so that both of these have same surface charge density α. If they are connected to each other with a conducting wire, in which direction will the charge flow and why?
EASY
12th CBSE
IMPORTANT

Figures below (a) and (b) show the field lines of a single positive and negative charge respectively.

Question Image

Give the signs of the potential differences, VP-VQ; VB-VA.