ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120
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hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120
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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The resistance of the given conductor can be increased by	A. Increasing the area B. Changing resistivity C. Decreasing the length D. None of the above because change does not matter because in any case the volume remains the same
2	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
3	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions
4	A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?	A. Zero B. 5μC m^-2 C. 20μC m^-2 D. 8μC m^-2
5	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
6	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
7	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area
8	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
9	Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be	A. 711μF B. 611μF C. 811μF D. 511μF
10	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position

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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 one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

The resistance of a conductor does not depend on its

The liquid which conduct current is known as

The resistance of an incandescent lamp is

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

The unit of intensity of electric field is

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

Free electrons are

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Thermocouple is an arrangement of two different metals

If the two charges in Coulomb's law have double distance between them, then electric force

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

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

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

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 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

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

The speed of randomly moving electrons depends upon

The charge per unit time through any cross-section of a conductor is called

Some charge is being given to a conductor. Then its potential

Heating effect caused by an electric circuit is written

The capacitance of a parallel plate capacitor depends upon

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

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

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

Specific resistance of a wire depends upon

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

The resistivity of a substance depends upon the

Electric potential of earth is taken to be zero because the earth is good

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ECAT Physics Chapter 12 Important MCQ's

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