ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

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

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Anayat Ali 04 - Apr - 2024 01 Min 07 Sec 60/60
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Abdullah 07 - Mar - 2024 08 Min 13 Sec 60/60
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Alishba Farooq 08 - Mar - 2024 16 Min 42 Sec 55/60
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Malik Mureed Awan 02 - Dec - 2024 01 Min 58 Sec 40/60
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mashal zainab 11 - Mar - 2024 05 Min 58 Sec 40/60
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Inamurehman rehmanbajwa 27 - May - 2024 10 Min 39 Sec 40/60
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sweet home 17 - Dec - 2024 15 Min 50 Sec 40/60
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hamid shoukat 25 - Nov - 2025 16 Min 32 Sec 36/60
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Lozina Jalil 29 - Aug - 2024 03 Min 13 Sec 35/60
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Salvaa Sheikh 20 - Sep - 2024 03 Min 21 Sec 35/60
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Sohaib Ali 13 - Oct - 2024 04 Min 38 Sec 35/60
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hareema gull 27 - May - 2024 06 Min 28 Sec 35/60
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Muhammad Abdur.Rahman Khan 01 - Sep - 2024 07 Min 03 Sec 35/60

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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
2	A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when	A. q = Q/4 B. q = Q/2 C. q = ! D. None of these
3	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
4	A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?	A. Electric potential at the surface of the cube is zero B. Electric potential within the cube is zero C. Electric filed is normal to the surface of the cube D. Electric filed varies within the cube
5	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
6	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
7	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
8	The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately	A. 9.8 B. 24 x 10¹⁹ C. 24 x 10⁴² D. 24 x 10^-44
9	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	A. 0.4 A B. 11.4 A C. 9.8 A D. 10.6 A
10	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature

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ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

ECAT Physics Chapter 12 Electrostatics

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

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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

Ohm is the unit of

The electric field will be uniform

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

Cause of heat production in a current carrying conductor is

The graphical representation of ohm's law is

Surface density of charge is defined as

Battery is charged in motor cars, which is based on

The electric field intensity at a point due to a point charge

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

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

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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

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

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?

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