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	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
2	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
3	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
4	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²
5	The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V
6	The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is	A. 10 KJ B. 5 KJ C. 2 KJ D. 1 KJ
7	A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor	A. Increases B. Decreases C. Remain unchanged D. Becomes infinite
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	In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes	A. Four-fold B. One-half C. One-fourth D. Zero
10	Coulomb's force between two point charges depends upon	A. Magnitude of charges B. Distance between them C. Medium in which they are located D. All 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

An electric charge at rest is

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

In bringing an electron towards another electron, electrostatic potential energy of system

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

The SI unit of current is

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

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

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Electron volt is the unit of

In a charged capacitor the energy is stored in

The resistance of a conductor does not depend on its

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

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

The minimum charge on any object can not be less than

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Ohm established a relation between

Free electrons are

The charge carriers in gases are

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

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

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

Electric generators which convert mechanical energy into

Resistance of a conductor is increased, the currant will

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

One coulomb of charge is created by

The relation V = IR represents

The SI unit of capacitance is

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

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

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ECAT Physics Chapter 12 Important MCQ's

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