ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	At ordinary temperature, an increase in temperature increases the conductivity of	A. Conductor B. Semiconductor C. Insulator D. Alloy
2	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
3	The electric flux from a closed surface	A. Is independent of the shape of the surface B. Depends on the charge enclosed by the surface C. Both a and b D. None of the above
4	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
5	The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of	A. power B. current C. resistance D. temperature
6	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
7	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	A. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
8	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?	A. 60 W bulb B. 100 W bulb C. Both equally D. None of these
9	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
10	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed

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ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Physics ECAT Pre Engineering Chapter 12 Electrostatics

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

In bringing an electron towards another electron, electrostatic potential energy of system

The electric intensity at infinite distance from the point charge will be

The thermistors are usually made of

The electric flux is linked with a surface will be maximum when

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

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

Electric flux is defined by the relation

The unit of resistance is

Electric potential of earth is taken to be zero because the earth is good

An electric charge at rest is

Coulomb force, when any material medium is placed between two charges

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

Specific resistance of a wire depends upon

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Battery is charged in motor cars, which is based on

The SI unit of capacitance is

If the length of the conductor is double and its cross sectional area is halved, its conductance will

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

The charge carriers in gases are

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

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

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

Which one of the following is the unit of electric field intensity

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

The earth's potential is taken as

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

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?