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	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
2	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	A. They have the same potential B. They have the same amount of charge C. They have the same capacity D. They have the same shape
3	The electric field intensity at a point due to a point charge	A. Falls off inversely as the distance B. Falls off inversely as the square of distance C. Remains unchanged with distance D. Increase directly as square of distance
4	The conductivity of a superconductor is	A. Infinite B. Very large C. Very small D. Zero
5	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
6	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
7	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
8	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
9	A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?	A. 108 g B. 10.8 g C. 0.8 g D. 108/0.8 g
10	If a 40 watt light bulb burns for 2 hours. how much heat is generated	A. 288 x 10³J B. 288 x 10⁸J C. 288 x 10⁵J D. 288 x 10⁶J

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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

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

At any point on the right bisector of the line joining two equal and opposite charges

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

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

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

The SI unit of electric field intensity is

Electron volt is the unit of.

The graphical representation of ohm's law is

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Coulomb's force between two point charges depends upon

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

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

106electrons are moving through a wire per second, the current developed is

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

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

The SI unit of current is

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

The electric lines of force are

The unit of intensity of electric field is

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Ohm is the unit of

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

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

The SI unit of capacitance is

The resistance of the given conductor can be increased by

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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

Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be

10⁶electrons are moving through a wire per second, the current developed is

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is