EASY
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Is insulator charged by induction?

Important Questions on Electricity

HARD
Science>Physics>Electricity>Conductors and Insulators
Two isolated conducting spheres S1 and S2 of radius 23R and 13R have 12 μC and -3 μC charges, respectively, and are at a large distance from each other, They are now connected by a conducting wire. A long time after this is done the charges on S1 and S2 are respectively:
EASY
Science>Physics>Electricity>Conductors and Insulators
Two identical conducting spheres A and B carry equal charge. They are initially separated by a distance much larger than their diameters and the force between them is F. A third identical conducting sphere C is uncharged. Sphere C is first touched to A, then to C and removed. As a result, the force between A and B now is
EASY
Science>Physics>Electricity>Conductors and Insulators
How will you charge a plastic comb (plastic scale or plastic pen) by the method of friction?
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on rod B if charging is to be done by conduction?
EASY
Science>Physics>Electricity>Conductors and Insulators
Name two substances which can be charged by friction.
EASY
Science>Physics>Electricity>Conductors and Insulators
How will you charge a glass rod by the method of friction?
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
State two ways of charging a conductor.
EASY
Science>Physics>Electricity>Conductors and Insulators
How will you charge a ballpoint pen refill by the method of friction?
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
Explain the charging by induction in terms of movement of electrons.
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
An ebonite rod is rubbed with fur. Explain the charging of the ebonite rod and the fur on the basis of electron movement.
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
Describe the method of charging a conductor by induction.
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?
(a) Inflated rubber balloon (b) Woollen cloth (c) Ballpoint pen refill (d) Polythene bag
EASY
Science>Physics>Electricity>Conductors and Insulators
Explain why a charged body loses its charge when we touch it with our hand.
EASY
Science>Physics>Electricity>Conductors and Insulators
Figure below shows a metal rod AB placed on an insulating stand. In figure (a) a negatively charged ebonite rod C is touched with the metal rod AB, while in figure (b), the negatively charged ebonite rod C is held near the rod AB. State the kind of charges at the ends A and B of the rod, in each case.
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EASY
Science>Physics>Electricity>Conductors and Insulators
How will you charge an inflated rubber balloon by the method of friction?
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
Name the way of charging a conductor in which the charge is shared.
EASY
Science>Physics>Electricity>Conductors and Insulators
A plastic comb is rubbed with dry hair whereas a glass rod is rubbed with a piece of silk cloth. Which of these will get negatively charged?
(a) Plastic comb (b) Glass rod (c) Dry hair (d) Silk cloth
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
A glass rod is rubbed with silk. Explain the charging of the glass rod and the silk on the basis of electron movement.
EASY
Science>Physics>Electricity>Conductors and Insulators
Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then
MEDIUM
Science>Physics>Electricity>Conductors and Insulators
Describe the method of charging a conductor by conduction.