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	Coulomb's force between two point charges depends upon	A. Magnitude of charges B. Distance between them C. Medium in which they are located D. All of the above
2	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	A. 5 volt B. 3 volt C. 15 volt D. 9 volt
3	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
4	The value of electrical constant of proportionality k is	A. 9 x 10⁹Nm²C^-2 B. 9 x 10^-9Nm²C^-2 C. 9 x 10¹⁰Nm²C² D. 9.85 x 10^-12N^-1C^-2
5	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
6	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
7	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
8	Electric generators which convert mechanical energy into	A. solar energy B. thermal energy C. kinetic energy D. electrical energy
9	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. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
10	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday

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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

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

The value of electrical constant of proportionality k is

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

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

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

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

The earth's potential is taken as

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

One electron volt is equal to

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 electric field will be uniform

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

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

One joule is equal to

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

The unit of resistivity is

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

The charge carriers in electrolyte are positive and negative

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

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

The graphical representation of ohm's law is

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

Resistance of a conductor depends upon

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

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

Solar cell converts sunlight directly into

Surface density of charge is defined as

The concept of field theory was put forward by

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

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ECAT Physics Chapter 12 Important MCQ's

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

The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy 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