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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Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120
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Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 Sec 80/120
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Furqan Asif 26 - Mar - 2026 36 Min 02 Sec 72/120
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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
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suzi 10 - Feb - 2026 08 Min 22 Sec 64/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	Consider a spherical shell of metal at he centre of which a positive point charge is kept	A. The electric filed is zero outside the shell B. The electric field is zero everywhere C. The electric field is zero in the region inside the shell D. The electric field is non-zero in both regions outside and inside the shell
2	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. 7.20 N B. 11.25 N C. 22.50 N D. 45.00
3	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	A. 1.92 N B. 19.2 N C. 12 N D. 0.192 N
4	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above
5	The SI unit of current is	A. watt B. coulomb C. volt D. ampere
6	Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends	A. 120 C B. 240 C C. 20 C D. 4 C
7	Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then	A. R₁= 2R₂ B. R₂= 2R₁ C. R₂=4R₁ D. R₁= 4R₂
8	The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as	A. voltmeters B. resistance C. electrode D. current
9	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	A. 2 R B. R/4 C. R/2 D. R
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 conductivity of a superconductor is

The resistance of an incandescent lamp is

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

The ohm's is defined as

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

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?

If the length of the conductor is double and its cross sectional area is halved, its conductance will

Resistor is a device which convert electric energy to

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The liquid which conduct current is known as

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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

The unit of resistance is

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

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

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

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Heating effect caused by an electric circuit is written

Free electrons are

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

The capacitance of a parallel plate capacitor depends upon

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

The electric field due to an infinite long thin wire at a distance R varies as

The SI unit of current is

106electrons are moving through a wire per second, the current developed is

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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?

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

10⁶electrons are moving through a wire per second, the current developed is