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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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	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
2	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	A. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
3	Equal charges are given to two spheres of different radii. The potential will	A. Be more on the smaller sphere B. Be more on the bigger sphere C. Be equal on both the sphere D. Depend on the nature of the material of the sphere
4	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
5	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
6	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
7	The electric flux from a closed surface	A. Is independent of the shape of the surface B. Depends on the charge enclosed by the surface C. Both a and b D. None of the above
8	The electric field due to an infinite long thin wire at a distance R varies as	A. 1/R B. 1/R² C. R D. R²
9	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
10	If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us	A. parabola B. straight line C. hyper bola D. ellipse

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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 conducting wire is drawn to double its length. Final resistivity of the material will be

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

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

The concept of field theory was put forward by

Cause of heat production in a current carrying conductor is

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

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Free electrons are

The liquid which conduct current is known as

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

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

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

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

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

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

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

A condenser of capacity 50μF is charged to 10 V.The energy stored is

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

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

The minimum charge on any object can not be less than

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

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

In a charged capacitor the energy is stored in

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

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

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

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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

The SI unit of electric field intensity is

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

ECAT Physics Chapter 12 Important MCQ's

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In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

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

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?