ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy	A. Ve B. V/e C. e/V D. 2Ve
2	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
3	The SI unit of conductivity is	A. ohm-m B. ohm^-1m^-1 C. ohm-m^-1 D. ohm^-1m
4	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	A. 1/3 V B. 2/3 V C. 3/2 V D. 3V
5	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
6	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
7	Magnetic effect at a point caused due to flow a current depend upon the	A. Quantity of current B. Distance from current C. Both the quantity of current and distance from current element D. None of the all
8	The resistance of an incandescent lamp is	A. Smaller when switched on B. Greater when switched off C. The same whether it is switch off or switch on D. Greater when switched on
9	The electric field due to an infinite long thin wire at a distance R varies as	A. 1/R B. 1/R² C. R D. R²
10	Capacitance of two or more capacitors	A. Increases in series combination B. Increases in parallel combination C. Remains unchanged D. None of the above

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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 SI unit of electric flux is

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

Battery is charged in motor cars, which is based on

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

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 electric flux from a closed surface

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

The graphical representation of ohm's law is

In a charged capacitor the energy is stored in

Electron volt is the unit of.

Some charge is being given to a conductor. Then its potential

The SI unit of current is

The speed of randomly moving electrons depends upon

The resistance of an incandescent lamp is

One joule is equal to

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

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

At ordinary temperature, an increase in temperature increases the conductivity of

The SI unit of conductivity is

Which of the following represents an electric current?

One coulomb of charge is created by

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Heating effect caused by an electric circuit is written

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 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

An electric charge at rest is

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

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

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ECAT Physics Chapter 12 Important MCQ's

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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