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 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
2	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
3	The charge carriers in gases are	A. electrons B. ions C. protons D. ions and electrons
4	Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become	A. -10 N B. +10 N C. +20 N D. -20 N
5	A conducting wire is drawn to double its length. Final resistivity of the material will be	A. Double of the original one B. Half of the original one C. One fourth of the original one D. Same as original one
6	Potentiometer is more sensitive than voltmeter, because	A. Voltmeter has a very high resistance B. Voltmeter has a very low resistance C. Potentiometer does not draw any current from a source of unknown potential difference D. Potentiometer is sensitive
7	The electric lines of force are	A. Imaginary B. Physically existing everywhere C. Physically existing near the charge D. All of the above
8	The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of	A. negative charges B. positive charges C. protons D. electrons
9	The value of electrical constant of proportionality k is	A. 9 x 10⁹Nm²C^-2 B. 9 x 10^-9Nm²C^-2 C. 9 x 10¹⁰Nm²C² D. 9.85 x 10^-12N^-1C^-2
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

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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 field intensity is

If the two charges in Coulomb's law have double distance between them, then electric force

Electron volt is the unit of

The relation V = IR represents

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

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

One coulomb per second is equal to

Equal charges are given to two spheres of different radii. The potential will

The SI unit of capacitance is

The earth's potential is taken as

The electric flux from a closed surface

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

The capacitance of a parallel plate capacitor depends upon

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

Thermocouple is an arrangement of two different metals

Electron volt is the unit of.

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

The nature of capacity of electrostatic capacitor depends on

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

The resistance of an incandescent lamp is

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

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

The resistivity of a substance depends upon the

Battery is charged in motor cars, which is based on

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

One joule is equal to

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An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is