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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
If electric and gravitational force on an electron in a uniform electric field will be
Question # 2
The electrode connected with the positive terminal of the current source is called
Question # 3
Electron volt is the unit of
Question # 4
A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
Question # 5
The relation between charge 'Q' and current 'I' is given by
Question # 6
The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
Question # 7
Current provided by a battery is maximum when
Question # 8
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 # 9
Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved
Question # 10
In a charged capacitor the energy is stored in
Question # 11
A condenser of capacity 50μF is charged to 10 V.The energy stored is
Question # 12
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
Question # 13
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 # 14
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 15
A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to
Question # 16
A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
Question # 17
The electric field due to an infinite long thin wire at a distance R varies as
Question # 18
The SI unit of conductivity is
Question # 19
The electric field will be uniform
Question # 20
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 21
The energy stored in a charge capacitor
Question # 22
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 23
The resistance of a conductor does not depend on its
Question # 24
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 25
Which one of the following is the unit of electric field intensity
Question # 26
The ohm's is defined as
Question # 27
The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to
Question # 28
A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
Question # 29
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 # 30
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The ohm's is defined as |
A. 1 ampere / 1 volts
B. 1 coulomb / 1 volt
C. 1 volt / 1 ampere
D. 1 volt / 1 coulomb
|
| 2 | The electric field will be uniform |
A. Near a positive point charge
B. Near a negative point charge
C. Between two oppositely charged parallel metal plates
D. None of above
|
| 3 | In a charged capacitor the energy is stored in |
A. Both in positive and negative charges
B. Positive charges
C. The edges of the capacitor plates
D. The electric field between the plates
|
| 4 | Some charge is being given to a conductor. Then its potential |
A. Is maximum at surface
B. Is maximum at centre
C. Is remain same throughout the conductor
D. Is maximum somewhere between surface and centre
|
| 5 | A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J |
A. 5
B. 0.5
C. 0.005
D. 50
|
| 6 | A 60 W bulb operates on 220 V supply. The current flowing through the bulb is |
A. 11/3 A
B. 3 A
C. 3/11 A
D. 6
|
| 7 | 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? |
A. Zero
B. 5μC m-2
C. 20μC m-2
D. 8μC m-2
|
| 8 | Electric flux is defined by the relation |
A. E.A.
B. E x A
C. E/A
D. none of these
|
| 9 | 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 |
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
|
| 10 | The charge per unit time through any cross-section of a conductor is called |
A. capacitance
B. electric power
C. current
D. potential difference
|
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