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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Mehpara Khatoon 07 - Aug - 2024 24 Min 16 Sec 55/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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
2	The conductivity of a superconductor is	A. Infinite B. Very large C. Very small D. Zero
3	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
4	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
5	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
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	The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as	A. voltmeters B. resistance C. electrode D. current
8	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
9	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)	A. Q/4πr² B. 2Q/4πr² C. Q.d D. Zero
10	The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately	A. 9.8 B. 24 x 10¹⁹ C. 24 x 10⁴² D. 24 x 10^-44

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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

Specific resistance of a wire depends upon

Some charge is being given to a conductor. Then its potential

Ohm established a relation between

One joule is equal to

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

The thermistors are usually made of

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

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

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 SI unit of permitivity is

Cause of heat production in a current carrying conductor is

Which of the following does not obey ohm's law?

Surface density of charge is defined as

The relation V = IR represents

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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

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

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

The electric field will be uniform

The electrode connected with the positive terminal of the current source is called

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

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

Resistance of a conductor depends upon

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

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

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

Battery is charged in motor cars, which is based on

Electric potential of earth is taken to be zero because the earth is good

In a voltmeter the conduction takes place due to

If a 40 watt light bulb burns for 2 hours. how much heat is generated

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ECAT Physics Chapter 12 Important MCQ's

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