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	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
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	Resistance of a conductor depends upon	A. the quantity of current passing through it B. the voltage applied between its end C. its dimensions, physical state and nature of its material D. all of the above
5	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
6	A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
7	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
8	Physicist George Simon ohm was a	A. German physical B. French physicist C. Chinese physicist D. Russian physicist
9	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
10	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

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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

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

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

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 energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

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

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

The SI unit of permitivity is

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

One coulomb per second is equal to

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

Potentiometer is more sensitive than voltmeter, because

The unit of resistivity is

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

One joule is equal to

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

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

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

The thermistors are usually made of

Capacitance of two or more capacitors

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

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

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

The earth's potential is taken as

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, 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

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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?

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is