1.5 BASIC PROPERTIES OF ELECTRIC CHARGE

1. The minimum charge on an object is

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1 coulomb

1 stat coulomb

1.6x10^-19 coulomb

n x e where e = 1.6x10^-19 coulomb

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2. When 10^14 electrons are removed from a neutral metal sphere, the charge on the sphere becomes

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16 µC

-16 µC

32 µC

-32 µC

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3. One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass is given equal amount of negative charge. Then

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Mass of A and mass of B still remain equal

Mass of A increases

Mass of B increases

Mass of B decreases

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4. An α-particle has two protons and two neutrons. The charge on α-particle is

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1.6 x 10^-19C

3.2 x 10^-19C

4.8 x 10^-19C

6.4 x 10^-19C

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5. A body has – 80 micro coulomb of charge. Number of additional electrons in it will be

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8 x 10^14

5 x 10^14

5 x 10^-14

10^15

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6. A moving charge has (Tick all that applies)

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Gravitational nature (field)

Electrostatic nature (field)

Magnetic nature (field)

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