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 force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these
2	The capacity of a parallel plat capacitor depends on the	A. Type to metal used B. Thickness of plates C. Potential applied across the plates D. Separation between the plates
3	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
4	A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes	A. 2R B. 4R C. 16R D. Zero
5	If electric and gravitational force on an electron in a uniform electric field will be	A. E=mg/q B. E=q/mg C. E=,g/q D. E=qg/m
6	What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?	A. 10^-1A B. 10^-2A C. 10^-4A D. 1 mA
7	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
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	Physicist George Simon ohm was a	A. German physical B. French physicist C. Chinese physicist D. Russian physicist
10	For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is	A. 3/5 ohm B. 2 ohm C. 6/5 ohm D. 3 ohm

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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

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

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

Which one of the following is the unit of electric field intensity

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

The fractional change in resistance per kelvin is known as

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

The liquid which conduct current is known as

One coulomb of charge is created by

The SI unit of permitivity is

Free electrons are

Coulomb's force between two point charges depends upon

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

The thermistors are usually made of

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

The capacitance of a parallel plate capacitor depends upon

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

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

Ohm's law states that

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

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

One electron volt is equal to

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

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 electric field intensity at a point due to a point charge

The SI unit of conductivity is

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

In a charged capacitor the energy is stored in

Resistance of a conductor depends upon

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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 excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

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