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	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
3	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
4	Specific resistance of a wire depends upon	A. Length B. Cross-section area C. Mass D. None
5	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. 1 : 2 B. 2 : 1 C. 1 : 4 D. 4 : 1
6	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
7	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
8	The electric flux from a closed surface	A. Is independent of the shape of the surface B. Depends on the charge enclosed by the surface C. Both a and b D. None of the above
9	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
10	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰

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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

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

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

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 potential difference across each resistance in series combination is

At ordinary temperature, an increase in temperature increases the conductivity of

The unit of intensity of electric field is

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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

The unit of resistance is

Coulomb's force between two point charges depends upon

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

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

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

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

Free electrons are

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

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

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

A condenser of capacity 50μF is charged to 10 V.The energy stored is

The electric intensity outside the two oppositely charged parallel metal plates is

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

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

The resistivity of a substance depends upon the

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

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

Which one of the following is the unit of electric field intensity

Current provided by a battery is maximum when

Ohm established a relation between

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ECAT Physics Chapter 12 Important MCQ's

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What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be