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

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Question # 2

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Question # 3

The graphical representation of ohm's law is

Question # 4

Heating effect caused by an electric circuit is written

Question # 5

Electron volt is the unit of

Question # 6

The thermistors are usually made of

Question # 7

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Question # 8

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

Question # 9

The charge per unit time through any cross-section of a conductor is called

Question # 10

In bringing an electron towards another electron, electrostatic potential energy of system

Question # 11

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

Question # 12

The SI unit of permitivity is

Question # 13

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Question # 14

The SI unit of capacitance is

Question # 15

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Resistance of a conductor is increased, the currant will
A. Decrease
B. Increase
C. Remain the same
D. None of these
2 Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
A. 3RΩ
B. 2R/4Ω
C. R/3Ω
D. 2R/3Ω
3 A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
A. Charge Q
B. Potential V
C. Capacity
D. Energy U
4 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
5 The SI unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
6 If the distance of separation between two chares is increased, the electrical potential energy of the system will
A. Increase
B. Decrease
C. May increase or decrease
D. Remain the same
7 Electric generators which convert mechanical energy into
A. solar energy
B. thermal energy
C. kinetic energy
D. electrical energy
8 The resistance of a conductor does not depend on its
A. mass
B. resistivity
C. length
D. cross-sectional area
9 Cause of heat production in a current carrying conductor is
A. Collisions of free electrons with one another
B. High drift speed of free electrons
C. Collisions of free electrons with atoms or ions of conductor
D. High resistance value
10 The electric field due to an infinite long thin wire at a distance R varies as
A. 1/R
B. 1/R2
C. R
D. R2

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