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	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature
2	Thermocouple is an arrangement of two different metals	A. To convert heat energy in to electrical energy B. To produce more heat C. To convert heat energy into chemical energy D. To convert electric energy in to heat energy
3	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	A. 200 J B. 100 J C. 1000 J D. 400 J
4	Which one of the following causes production of heat when current is set up in a wire?	A. Fall of electrons from higher orbits to lower orbits B. Inter-atomic collisions C. Inter-electron collisions D. Collisions of conduction electron with atoms
5	One coulomb of charge is created by	A. 10 electrons B. 1.6 x 10^-19electrons C. 6.25 x 10¹⁸electrons D. 6.25 x 10²¹electrons
6	The charge carriers in gases are	A. electrons B. ions C. protons D. ions and electrons
7	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
8	The SI unit of capacitance is	A. Farad B. Henry C. Ohm D. Volt
9	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
10	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W

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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

Magnetic effect at a point caused due to flow a current depend upon the

The charge carriers in electrolyte are positive and negative

Coulomb's force between two point charges depends upon

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Electric generators which convert mechanical energy into

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

Potentiometer is more sensitive than voltmeter, because

At any point on the right bisector of the line joining two equal and opposite charges

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

The minimum charge on any object can not be less than

One joule is equal to

The capacity of a parallel plat capacitor depends on the

The dot product of electric field intensity E and vector area A is called

The electric flux from a closed surface

The unit of intensity of electric field is

If the distance of separation between two chares is increased, the electrical potential energy of the system will

One electron volt is equal to

Battery is charged in motor cars, which is based on

The charge per unit time through any cross-section of a conductor is called

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

The electrode connected with the positive terminal of the current source is called

The earth's potential is taken as

Capacitance of two or more capacitors

In a voltmeter the conduction takes place due to

The resistance of the given conductor can be increased by

The SI unit of capacitance is

Electron volt is the unit of

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

The SI unit of permitivity is

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ECAT Physics Chapter 12 Important MCQ's

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