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 SI unit of conductivity is	A. ohm-m B. ohm^-1m^-1 C. ohm-m^-1 D. ohm^-1m
2	If the two charges in Coulomb's law have double distance between them, then electric force	A. Becomes two-fold B. Becomes four-fold C. Remains the same D. None of these
3	Electric flux is defined by the relation	A. E.A. B. E x A C. E/A D. none of these
4	The electric field intensity at a point due to a point charge	A. Falls off inversely as the distance B. Falls off inversely as the square of distance C. Remains unchanged with distance D. Increase directly as square of distance
5	The dot product of electric field intensity E and vector area A is called	A. Electric potential B. Electric flux C. Electric field D. Magnetic field
6	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
7	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
8	Electric generators which convert mechanical energy into	A. solar energy B. thermal energy C. kinetic energy D. electrical energy
9	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
10	The earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite

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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 electric flux from a closed surface

The concept of field theory was put forward by

The resistance of a conductor does not depend on its

The conductivity of a superconductor 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

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

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

Ohm is the unit of

One joule is equal to

Electric generators which convert mechanical energy into

Resistance of a conductor is increased, the currant will

Battery is charged in motor cars, which is based on

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

The energy stored in a charge capacitor

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

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

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

The electric field will be uniform

The minimum charge on any object can not be less than

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

The fractional change in resistance per kelvin is known as

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

Electron volt is the unit of.

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

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

One coulomb per second is equal to

106electrons are moving through a wire per second, the current developed is

The relation V = IR represents

Heating effect caused by an electric circuit is written

The SI unit of electric field intensity is

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ECAT Physics Chapter 12 Important MCQ's

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Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be

10⁶electrons are moving through a wire per second, the current developed is