ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

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

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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

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 # 2

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Question # 3

The electric flux is linked with a surface will be maximum when

Question # 4

The SI unit of electric flux is

Question # 5

Specific resistance of a wire depends upon

Question # 6

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 # 7

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 8

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

Question # 9

The capacitance of a parallel plate capacitor depends upon

Question # 10

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

Question # 11

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 12

The SI unit of capacitance is

Question # 13

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 14

The electric flux from a closed surface

Question # 15

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Question # 16

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 # 17

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

Question # 18

The relation between charge 'Q' and current 'I' is given by

Question # 19

The concept of field theory was put forward by

Question # 20

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 21

If a 40 watt light bulb burns for 2 hours. how much heat is generated

Question # 22

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Question # 23

The electric field will be uniform

Question # 24

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Question # 25

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

Question # 26

Which one of the following is the unit of electric field intensity

Question # 27

Some charge is being given to a conductor. Then its potential

Question # 28

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Question # 29

The graphical representation of ohm's law is

Question # 30

The energy stored in a charge capacitor

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Heating effect caused by an electric circuit is written
A. H = I2Rt
B. H = I2R
C. H = IR2t
D. H = IR2
2 The SI unit of electric flux is
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
3 The concept of field theory was put forward by
A. Franklin
B. Kepler
C. Oersted
D. Michael Faraday
4 Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
5 In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
A. Time constant
B. Decay constant
C. None of these
D. All of above
6 A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
7 The electric intensity outside the two oppositely charged parallel metal plates is
A. Maximum
B. Minimum
C. Zero
D. Infinite
8 The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
A. 10Ω
B. 20Ω
C. 30Ω
D. 40Ω
9 The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of
A. power
B. current
C. resistance
D. temperature
10 In a voltmeter the conduction takes place due to
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions

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