ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

Try The MCQ's Test For ECAT Physics Chapter 12 Electrostatics

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ECAT Physics Chapter 12 Electrostatics

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Question # 1

The electric lines of force are

Question # 2

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Question # 3

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

Question # 4

Specific resistance of a wire depends upon

Question # 5

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Question # 6

The nature of capacity of electrostatic capacitor depends on

Question # 7

If we increase the distance between two plates of the capacitor, the capacitance will

Question # 8

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Question # 9

Battery is charged in motor cars, which is based on

Question # 10

The resistance of an incandescent lamp is

Question # 11

In a charged capacitor the energy is stored in

Question # 12

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

Question # 13

Thermocouple is an arrangement of two different metals

Question # 14

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

Question # 15

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
2 Which one of the following has larger value of relative permitivity Erat room temperature?
A. Vaccum
B. Air
C. Glass
D. Water
3 The SI unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
4 Resistance of a conductor depends upon
A. the quantity of current passing through it
B. the voltage applied between its end
C. its dimensions, physical state and nature of its material
D. all of the above
5 When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
A. Decreases
B. Increases
C. No change
D. May increase or decresase
6 In a voltmeter the conduction takes place due to
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
7 The charge carriers in electrolyte are positive and negative
A. protons
B. electrons
C. ions
D. none of these
8 The unit of resistance is
A. volt
B. ampere
C. ohm
D. coat
9 A conducting wire is drawn to double its length. Final resistivity of the material will be
A. Double of the original one
B. Half of the original one
C. One fourth of the original one
D. Same as original one
10 Electric potential of earth is taken to be zero because the earth is good
A. Semiconductor
B. Conductor
C. Insulator
D. Dielectric

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