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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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Total Questions30
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Time Allowed30
Physics ECAT Pre Engineering Chapter 12 Electrostatics
00:00
Question # 1
Physicist George Simon ohm was a
Question # 2
The current through a metallic conductor is due to the motion of
Question # 3
The electric intensity at infinite distance from the point charge will be
Question # 4
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
Question # 5
Which of the following does not obey ohm's law?
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 liquid which conduct current is known as
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
If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
Question # 10
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 # 11
In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
Question # 12
The unit of intensity of electric field is
Question # 13
Capacitance of two or more capacitors
Question # 14
The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
Question # 15
Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
Question # 16
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 17
An electric charge at rest is
Question # 18
The charge carriers in electrolyte are positive and negative
Question # 19
Which one of the following has larger value of relative permitivity Erat room temperature?
Question # 20
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 21
The energy stored in a charge capacitor
Question # 22
The minimum charge on any object can not be less than
Question # 23
The SI unit of conductivity is
Question # 24
A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
Question # 25
The capacity of a parallel plat capacitor depends on the
Question # 26
Solar cell converts sunlight directly into
Question # 27
A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be
Question # 28
The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
Question # 29
Electric flux is defined by the relation
Question # 30
The electric lines of force are
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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 |
A. q = Q/4
B. q = Q/2
C. q = !
D. None of these
|
| 2 | Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be |
A. 711μF
B. 611μF
C. 811μF
D. 511μF
|
| 3 | 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
|
| 4 | When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to |
A. One joule
B. One erg
C. One electron volt
D. None of these
|
| 5 | The SI unit of conductivity is |
A. ohm-m
B. ohm-1m-1
C. ohm-m-1
D. ohm-1m
|
| 6 | The earth's potential is taken as |
A. Negative
B. Positive
C. Zero
D. Infinite
|
| 7 | The charge per unit time through any cross-section of a conductor is called |
A. capacitance
B. electric power
C. current
D. potential difference
|
| 8 | The electric intensity outside the two oppositely charged parallel metal plates is |
A. Maximum
B. Minimum
C. Zero
D. Infinite
|
| 9 | A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver? |
A. 108 g
B. 10.8 g
C. 0.8 g
D. 108/0.8 g
|
| 10 | The resistance of the given conductor can be increased by |
A. Increasing the area
B. Changing resistivity
C. Decreasing the length
D. None of the above because change does not matter because in any case the volume remains the same
|
Test Questions
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fun day
02 Mar 2023Some answers are wrong
Hira arif
18 Jun 2019This website is grwst👍
Alisha
27 Apr 2019This website is great
baber
15 Feb 2019hi