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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
The relation V = IR represents
Question # 2
If the two charges in Coulomb's law have double distance between them, then electric force
Question # 3
A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
Question # 4
Current provided by a battery is maximum when
Question # 5
In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be
Question # 6
Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
Question # 7
An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
Question # 8
The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
Question # 9
Ohm's law states that
Question # 10
The electrode connected with the positive terminal of the current source is called
Question # 11
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 # 12
Which one of the following is the unit of electric field intensity
Question # 13
An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
Question # 14
In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes
Question # 15
The value of electrical constant of proportionality k is
Question # 16
Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if
Question # 17
Consider a spherical shell of metal at he centre of which a positive point charge is kept
Question # 18
Coulomb force, when any material medium is placed between two charges
Question # 19
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is
Question # 20
The unit of conductance is
Question # 21
A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
Question # 22
Electron volt is the unit of.
Question # 23
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 24
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 25
The electric intensity at infinite distance from the point charge will be
Question # 26
Surface density of charge is defined as
Question # 27
If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be
Question # 28
In a voltmeter the conduction takes place due to
Question # 29
The unit of resistivity is
Question # 30
The earth's potential is taken as
Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test
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S Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates |
A. Decreases
B. Increases
C. No change
D. May increase or decresase
|
| 2 | 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
|
| 3 | If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be |
A. 6 ohm
B. 4 ohm
C. zero ohm
D. 1.33 ohm
|
| 4 | A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be |
A. 1840 KeV
B. 1/1840 KeV
C. 1 KeV
D. 920 KeV
|
| 5 | Equal charges are given to two spheres of different radii. The potential will |
A. Be more on the smaller sphere
B. Be more on the bigger sphere
C. Be equal on both the sphere
D. Depend on the nature of the material of the sphere
|
| 6 | The SI unit of permitivity is |
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
|
| 7 | 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
|
| 8 | If the distance of separation between two chares is increased, the electrical potential energy of the system will |
A. Increase
B. Decrease
C. May increase or decrease
D. Remain the same
|
| 9 | The SI unit of current is |
A. watt
B. coulomb
C. volt
D. ampere
|
| 10 | An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be |
A. 1 MeV
B. 2 MeV
C. 4 MeV
D. 8 MeV
|
Test Questions