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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Taha 18 - Mar - 2026 17 Min 17 Sec 68/120
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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	A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be	A. 2 R B. R C. R/2 D. R/4
2	Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if	A. They have the same potential B. They have the same amount of charge C. They have the same capacity D. They have the same shape
3	Battery is charged in motor cars, which is based on	A. Chemical effect B. Magnetic effect C. Electric effect D. None
4	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
5	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	A. -10 N B. +10 N C. +20 N D. -20 N
6	Coulomb force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these
7	One coulomb of charge is created by	A. 10 electrons B. 1.6 x 10^-19electrons C. 6.25 x 10¹⁸electrons D. 6.25 x 10²¹electrons
8	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	A. 10μF B. 20μF C. 30μF D. 15μF
9	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
10	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these

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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 electric flux is

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

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

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

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

The capacitance of a parallel plate capacitor depends upon

In a charged capacitor the energy is stored in

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

Physicist George Simon ohm was a

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

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

One coulomb per second is equal to

The dot product of electric field intensity E and vector area A is called

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

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

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

The electric flux is linked with a surface will be maximum when

Surface density of charge is defined as

If electric and gravitational force on an electron in a uniform electric field will be

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

One coulomb of charge is created by

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

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

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)

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

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

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

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ECAT Physics Chapter 12 Important MCQ's

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Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then