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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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	The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V
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	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	A. 3.9 B. 4 C. 4.2 D. 6
4	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
5	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
6	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
7	If the two charges in Coulomb's law have double distance between them, then electric force	A. Becomes two-fold B. Becomes four-fold C. Remains the same D. None of these
8	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
9	If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy	A. Ve B. V/e C. e/V D. 2Ve
10	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative

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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

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 proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

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

Which of the following represents an electric current?

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

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

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

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

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

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

Electron volt is the unit of

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 relation between charge 'Q' and current 'I' is given by

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

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

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

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

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

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

Resistor is a device which convert electric energy to

The SI unit of electric flux is

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

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

The thermistors are usually made of

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

The resistance of the given conductor can be increased by

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Magnetic effect at a point caused due to flow a current depend upon the

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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ECAT Physics Chapter 12 Important MCQ's

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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

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

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