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 an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy	A. Ve B. V/e C. e/V D. 2Ve
2	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
3	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
4	Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved	A. 1.92 N B. 19.2 N C. 12 N D. 0.192 N
5	Equal charges are given to two spheres of different radii. The potential will	A. Be more on the smaller sphere B. Be more on the bigger sphere C. Be equal on both the sphere D. Depend on the nature of the material of the sphere
6	The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
7	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
8	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
9	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω
10	Consider a spherical shell of metal at he centre of which a positive point charge is kept	A. The electric filed is zero outside the shell B. The electric field is zero everywhere C. The electric field is zero in the region inside the shell D. The electric field is non-zero in both regions outside and inside the shell

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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 conducting wire is drawn to double its length. Final resistivity of the material will be

Battery is charged in motor cars, which is based on

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

Specific resistance of a wire depends upon

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

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

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

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

Electron volt is the unit of

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

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

The graphical representation of ohm's law is

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Free electrons are

In a charged capacitor the energy is stored in

The resistance of a conductor does not depend on its

Ohm's law states that

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 current through a metallic conductor is due to the motion of

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

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

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

The unit of intensity of electric field is

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

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

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

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

The SI unit of conductivity 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

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?