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 a 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 graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
3	Capacitance of two or more capacitors	A. Increases in series combination B. Increases in parallel combination C. Remains unchanged D. None of the above
4	The energy stored in a charge capacitor	A. 1/2CV² B. 1/2C²V C. 1/2C/V² D. None of these
5	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	A. 120 C B. 240 C C. 20 C D. 4 C
6	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area
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	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. Two B. 1/2 C. Zero D. 3/2
9	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
10	Electric potential of earth is taken to be zero because the earth is good	A. Semiconductor B. Conductor C. Insulator D. Dielectric

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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

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

Electric flux is defined by the relation

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

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

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

A condenser of capacity 50μF is charged to 10 V.The energy stored is

The value of electrical constant of proportionality k is

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

The ohm's is defined as

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

Consider a spherical shell of metal at he centre of which a positive point charge is kept

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

One electron volt is equal to

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

The SI unit of electric flux is

If a 40 watt light bulb burns for 2 hours. how much heat is generated

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Which one of the following has larger value of relative permitivity Erat room temperature?

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

Which one of the following causes production of heat when current is set up in a wire?

The SI unit of permitivity is

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

Current provided by a battery is maximum when

The fractional change in resistance per kelvin is known as

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

The current through a metallic conductor is due to the motion of

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

The resistivity of a substance depends upon the

In a charged capacitor the energy is stored in

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ECAT Physics Chapter 12 Important MCQ's

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Which one of the following has larger value of relative permitivity E_rat room temperature?

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