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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Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120
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Mehpara Khatoon 07 - Aug - 2024 24 Min 16 Sec 55/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is	A. Charge Q B. Potential V C. Capacity D. Energy U
2	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
3	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
4	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these
5	At any point on the right bisector of the line joining two equal and opposite charges	A. At electric field is zero B. The electric potential is zero C. The electric potential decreases with increasing distance from the centre D. The electric field is perpendicular to the line joining the charges
6	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²
7	The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is	A. 10 KJ B. 5 KJ C. 2 KJ D. 1 KJ
8	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
9	Some charge is being given to a conductor. Then its potential	A. Is maximum at surface B. Is maximum at centre C. Is remain same throughout the conductor D. Is maximum somewhere between surface and centre
10	The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is	A. 21 x 10³+ 10% B. 23 x 10¹+ 10% C. 21 x 10³+ 5% D. 12 x 10³+ 5%

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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 capacitance of a parallel plate capacitor depends upon

The thermistors are usually made of

Capacitance of two or more capacitors

The electric lines of force are

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

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

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

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

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)

The minimum charge on any object can not be less than

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

Resistor is a device which convert electric energy to

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

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

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

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

The conductivity of a superconductor is

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

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

Heating effect caused by an electric circuit is written

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

Resistance of a conductor is increased, the currant will

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

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

Current provided by a battery is maximum when

If the two charges in Coulomb's law have double distance between them, then electric force

Electron volt is the unit of

The speed of randomly moving electrons depends upon

The SI unit of capacitance is

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ECAT Physics Chapter 12 Important MCQ's

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