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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
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Question # 1
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 # 2
The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately
Question # 3
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 # 4
Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
Question # 5
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 6
A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
Question # 7
Heating effect caused by an electric circuit is written
Question # 8
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 # 9
The energy stored in a charge capacitor
Question # 10
When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
Question # 11
The graphical representation of ohm's law is
Question # 12
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 13
The SI unit of capacitance is
Question # 14
The dot product of electric field intensity E and vector area A is called
Question # 15
In bringing an electron towards another electron, electrostatic potential energy of system
Question # 16
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
Question # 17
The resistance of an incandescent lamp is
Question # 18
Battery is charged in motor cars, which is based on
Question # 19
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 # 20
Some charge is being given to a conductor. Then its potential
Question # 21
Which of the following represents an electric current?
Question # 22
A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?
Question # 23
A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is
Question # 24
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
Question # 25
In a charged capacitor the energy is stored in
Question # 26
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 # 27
Capacitance of two or more capacitors
Question # 28
The SI unit of conductivity is
Question # 29
Current provided by a battery is maximum when
Question # 30
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test
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M Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes |
A. 2R
B. 4R
C. 16R
D. Zero
|
| 2 | Consider a spherical shell of metal at he centre of which a positive point charge is kept |
A. The electric filed is zero outside the shell
B. The electric field is zero everywhere
C. The electric field is zero in the region inside the shell
D. The electric field is non-zero in both regions outside and inside the shell
|
| 3 | The nature of capacity of electrostatic capacitor depends on |
A. Shape
B. Size
C. Thickness of plates
D. Area
|
| 4 | A condenser of capacity 50μF is charged to 10 V.The energy stored is |
A. 1.25 x 10-3J
B. 3.75 x 10-3J
C. 2.5 x 10-3J
D. 5 x 10-3J
|
| 5 | 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 |
A. Two
B. 1/2
C. Zero
D. 3/2
|
| 6 | Capacitance of two or more capacitors |
A. Increases in series combination
B. Increases in parallel combination
C. Remains unchanged
D. None of the above
|
| 7 | Coulomb force, when any material medium is placed between two charges |
A. Increases
B. Decreases
C. Remain unchanged
D. None of these
|
| 8 | Ohm established a relation between |
A. voltage and resistance
B. voltage and charge
C. voltage and current
D. voltage resistance and charge
|
| 9 | The charge carriers in electrolyte are positive and negative |
A. protons
B. electrons
C. ions
D. none of these
|
| 10 | 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 |
A. -10 N
B. +10 N
C. +20 N
D. -20 N
|
Test Questions
