ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends	A. 120 C B. 240 C C. 20 C D. 4 C
2	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
3	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰
4	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
5	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
6	If the length of the conductor is double and its cross sectional area is halved, its conductance will	A. Increase four fold B. Become one-fourth C. Become one-half D. Remains unchanged
7	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
8	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
9	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
10	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

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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

Resistance of a conductor is increased, the currant will

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

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

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

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

Which of the following represents an electric current?

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

Surface density of charge is defined as

An electric charge at rest is

The unit of conductance is

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

The conductivity of a superconductor is

The ohm's is defined as

If we increase the distance between two plates of the capacitor, the capacitance will

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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

Battery is charged in motor cars, which is based on

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

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

Potentiometer is more sensitive than voltmeter, because

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

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

The electric lines of force are

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

The resistivity of a substance depends upon the

If the length of the conductor is double and its cross sectional area is halved, its conductance will

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

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

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ECAT Physics Chapter 12 Important MCQ's

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A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then