Question # 1

The electric field created by positive charge is:

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Radially outward

Circular

Radially inward

Zero

Coulomb /volt is called.

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Farad

Ampere

Joule

Henry

Gauss's law can only be applied to.

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A curved surface

A flat surface

A closed surface

A surface of any shape

A capacitor is perfect in insulator for.

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Alternating current

Sparking current

Eddy current

Direct current

Special organs called ampullae of lorenzenite are present in.

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Bats

Cats

Dogs

Sharks

The force of Neutron due to field of 10² N/C is.

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1.6 x 10^-17N

1.6 x 10^-19N

Zero

1.6 x 10^-21N

The number of electrons in one coulomb charge is equal to

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6.2 x 10¹⁸ electrons

Zero electrons

1.6 x 10^-22 electrons

6.2 x 10²¹ electrons

A proton is about 1840 time than an electron. When it is accelerated by a potencial difference if 1 kV, its kinetic energy will be:

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1884 ke V

1/1840 keV

1 keV

920 keV

Charge on electron is

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1.6 x 10^-19 C

1.6 x 10¹⁹C

1.6 x 10^-17C

1.6 x 10¹⁷C

The electrostatic force between two charges is 42 N, If we place a dielectric of E_y=2.1 between the charges then the force become equal to.

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42 N

88.2 N

20 N

2 N

Electric field intensity at a point is defined by the relation.

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E= q/F

E = F/q

E = qF

E = F/q2

Presence of dielectric between two charges always.

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Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

If a charge body moved against the electric field it will again

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Potential energy

K.E

Mechanical Energy

Electric potential energy

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.

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25 N

20 N

10 N

15 N

Electric flux is a:

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Scalar quantity

Vector quantity

Variable quantity

None of these

Charge carriers in electrolytes are.

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Protons

Electrons

Holes

Positive and Negative ions

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