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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
Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
Question # 2
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 # 3
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
Question # 4
If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?
Question # 5
Electron volt is the unit of.
Question # 6
The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is
Question # 7
Specific resistance of a wire depends upon
Question # 8
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 9
The current through a metallic conductor is due to the motion of
Question # 10
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
Question # 11
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 # 12
Consider a spherical shell of metal at he centre of which a positive point charge is kept
Question # 13
Physicist George Simon ohm was a
Question # 14
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 15
The electric field intensity at a point due to a point charge
Question # 16
The minimum charge on any object can not be less than
Question # 17
The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
Question # 18
A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?
Question # 19
The value of electrical constant of proportionality k is
Question # 20
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 # 21
The resistivity of a substance depends upon the
Question # 22
If electric and gravitational force on an electron in a uniform electric field will be
Question # 23
The resistance of an incandescent lamp is
Question # 24
A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
Question # 25
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 # 26
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 27
The SI unit of permitivity is
Question # 28
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 29
The capacity of a parallel plat capacitor depends on the
Question # 30
The SI unit of electric flux is
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 -
S Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120 -
S Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120 -
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H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The SI unit of capacitance is |
A. Farad
B. Henry
C. Ohm
D. Volt
|
| 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 | Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is |
A. 11.0 ohm
B. 1.0 ohm
C. 7.0 ohm
D. 3.0 ohm
|
| 4 | Which one of the following causes production of heat when current is set up in a wire? |
A. Fall of electrons from higher orbits to lower orbits
B. Inter-atomic collisions
C. Inter-electron collisions
D. Collisions of conduction electron with atoms
|
| 5 | The charge per unit time through any cross-section of a conductor is called |
A. capacitance
B. electric power
C. current
D. potential difference
|
| 6 | 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
|
| 7 | 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
|
| 8 | If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be |
A. 5μF
B. 20μF
C. 10μF
D. 15μF
|
| 9 | The SI unit of current is |
A. watt
B. coulomb
C. volt
D. ampere
|
| 10 | An electric charge at rest is |
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above
|
Test Questions