ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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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	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
2	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
3	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
4	The speed of randomly moving electrons depends upon	A. pressure B. volume C. temperature D. mass
5	One electron volt is equal to	A. 1.6 x 1019eV B. 6.25 x 1018 eV C. 1.6 x 1018 eV D. 6.25 x 1019eV
6	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
7	A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts	A. 1310 W B. 670 W C. 810 W D. 1210 W
8	The conductivity of a superconductor is	A. Infinite B. Very large C. Very small D. Zero
9	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
10	Magnetic effect at a point caused due to flow a current depend upon the	A. Quantity of current B. Distance from current C. Both the quantity of current and distance from current element D. None of the all

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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

The SI unit of capacitance is

The SI unit of electric field intensity is

The concept of field theory was put forward by

Which of the following does not obey ohm's law?

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

The electric lines of force are

The liquid which conduct current is known as

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

The minimum charge on any object can not be less than

In a voltmeter the conduction takes place due to

The unit of conductance is

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

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

Physicist George Simon ohm was a

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

The charge carriers in gases are

Electric flux is defined by the relation

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

Potentiometer is more sensitive than voltmeter, because

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

The resistance of the given conductor can be increased by

The thermistors are usually made of

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

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)

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

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

The electric field will be uniform

Battery is charged in motor cars, which is based on

The resistivity of a substance depends upon the

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

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ECAT Physics Chapter 12 Important MCQ's

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