ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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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 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is	A. Zero B. 0.5Ω C. 1.1Ω D. 5.0Ω
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	If electric and gravitational force on an electron in a uniform electric field will be	A. E=mg/q B. E=q/mg C. E=,g/q D. E=qg/m
4	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
5	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
6	A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then	A. The charge in the plates reduces and potential difference increase B. Potential difference between the plates increase, stored energy decreases and charge remains the same C. Potential difference between the plates decreases and charge remains unchanged D. None of the above
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	In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called	A. Time constant B. Decay constant C. None of these D. All of above
9	10⁶electrons are moving through a wire per second, the current developed is	A. 1.6 x 10^-19 B. 1 A C. 1.6 x 10^-15A D. 10⁶A
10	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

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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 thermistors are usually made of

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 cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

The SI unit of electric field intensity is

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

Thermocouple is an arrangement of two different metals

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

The capacity of a parallel plat capacitor depends on the

Resistor is a device which convert electric energy to

The liquid which conduct current is known as

Coulomb force, when any material medium is placed between two charges

The energy stored in a charge capacitor

The SI unit of electric flux is

The potential difference across each resistance in series combination is

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Free electrons are

The capacitance of a parallel plate capacitor depends upon

The resistance of a conductor does not depend on its

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

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

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 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 SI unit of conductivity is

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

One joule is equal to

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

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

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

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

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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ECAT Physics Chapter 12 Important MCQ's

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