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	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
2	A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?	A. 200 W B. 302.5 C. 250 W D. 350 W
3	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω
4	A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance	A. Increase k time B. Decreases k times C. Decreases 1/K times D. Remains unchanged
5	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
6	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	A. 200 J B. 100 J C. 1000 J D. 400 J
7	The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be	A. 1 : 2 B. 2 : 1 C. 1 : 4 D. 4 : 1
8	If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be	A. 1/3 V B. 2/3 V C. 3/2 V D. 3V
9	Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?	A. 3RΩ B. 2R/4Ω C. R/3Ω D. 2R/3Ω
10	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

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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

The current through a metallic conductor is due to the motion of

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

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

The unit of conductance is

The speed of randomly moving electrons depends upon

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

Ohm established a relation between

The unit of resistance is

The relation V = IR represents

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

Physicist George Simon ohm was a

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

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

The potential difference across each resistance in series combination is

Heating effect caused by an electric circuit is written

The electric flux is linked with a surface will be maximum when

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

Cause of heat production in a current carrying conductor is

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

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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

Specific resistance of a wire depends upon

The resistance of a conductor does not depend on its

The electric intensity outside the two oppositely charged parallel metal plates is

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

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

Resistance of a conductor depends upon

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

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ECAT Physics Chapter 12 Important MCQ's

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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

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

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

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