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MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics
Try The MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 12 Electrostatics
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Question # 1
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 2
If a 40 watt light bulb burns for 2 hours. how much heat is generated
Question # 3
In a voltmeter the conduction takes place due to
Question # 4
Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become
Question # 5
The nature of capacity of electrostatic capacitor depends on
Question # 6
The electric field intensity at a point due to a point charge
Question # 7
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
Question # 8
A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?
Question # 9
In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes
Question # 10
The relation V = IR represents
Question # 11
At any point on the right bisector of the line joining two equal and opposite charges
Question # 12
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 # 13
Which one of the following is the unit of electric field intensity
Question # 14
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 # 15
In bringing an electron towards another electron, electrostatic potential energy of system
Question # 16
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
Question # 17
The value of electrical constant of proportionality k is
Question # 18
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 # 19
The electric intensity at infinite distance from the point charge will be
Question # 20
If we increase the distance between two plates of the capacitor, the capacitance will
Question # 21
When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
Question # 22
The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is
Question # 23
If the distance of separation between two chares is increased, the electrical potential energy of the system will
Question # 24
In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be
Question # 25
One coulomb of charge is created by
Question # 26
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 # 27
A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
Question # 28
An electric charge at rest is
Question # 29
A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is
Question # 30
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
Top Scorers Of ECAT Pre General Science Physics Chapter 12 Electrostatics MCQ`s Test
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T Tamseela Ehsan 04 - Sep - 2023 13 Min 56 Sec 50/120 -
K Khurram 29 - Jan - 2019 16 Min 26 Sec 50/120 -
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A Abdul Jabbar 17 - Apr - 2018 03 Min 18 Sec 0/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The capacitance of a parallel plate capacitor depends upon |
A. Area of the plates
B. Separation between the plates
C. Medium between the plates
D. All of the above
|
| 2 | A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute? |
A. 3 x 1020
B. 3 x 1010
C. 6 x 1020
D. 6 x 1010
|
| 3 | Electric flux is defined by the relation |
A. E.A.
B. E x A
C. E/A
D. none of these
|
| 4 | Electron volt is the unit of |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 5 | Which one of the following has larger value of relative permitivity Erat room temperature? |
A. Vaccum
B. Air
C. Glass
D. Water
|
| 6 | 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
|
| 7 | In a voltmeter the conduction takes place due to |
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
|
| 8 | If a 40 watt light bulb burns for 2 hours. how much heat is generated |
A. 288 x 103J
B. 288 x 108J
C. 288 x 105J
D. 288 x 106J
|
| 9 | A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance |
A. Increase k time
B. Decreases k times
C. Decreases 1/K times
D. Remains unchanged
|
| 10 | In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is |
A. 3.9
B. 4
C. 4.2
D. 6
|
Test Questions