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Electric Charges & Fields - 02
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Q1. A positively charged rod is brought near an uncharged conductor. If the rod is then suddenly withdrawn, the charge left on the conductor will be
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1 point
+ve
-ve
zero
can't say
Q2. Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging
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1 point
remains unaffected
mass of A > mass of B
mass of A < mass of B
Nothing can be said
Q3. When a comb rubbed with dry hair attracts pieces of paper. This is because the
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1 point
comb polarizes the piece of paper
electric field due to the comb is uniform
comb induces a net dipole moment opposite to the direction of field
comb induces a net dipole moment perpendicular to the direction of field
Q4. When some charge is transferred to ...A... it readily gets distributed over the entire surface of ... A... If some charge is put on ... B..., it stays at the same place. Here, A and B refer to
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insulator, conductor
conductor, insulator
insulator, insulator
conductor, conductor
Q5. Quantisation of charge was experimentally demonstrated by
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Davisson and Germer experiment
Frank-Hertz experiment
Millikan’s oil drop experiment
Einstein’s photoelectric effect
Q6. In annihilation process, in which an electron and a positrontrans form into two gamma rays, which property of electric charge is displayed?
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Attraction and repulsion
Quantisation of charge
Additivity of charge
Conservation of charge
Q7. The law, governing the force between electric charges is known as
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Ampere's law
Ohm's law
Faraday's law
Coulomb's law
Q8. The value of electric permittivity of free space is
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a
b
c
d
Q9. Coulomb’s law is true for
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nuclear distances (= 10^–15 m)
atomic distances (= 10^–11 m)
charged as well as uncharged particles
all the distances
Q10. What happens when some charge is placed on a soap bubble?
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1 point
Its radius decreases
Its radius increases
The bubble collapses
None of them
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