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	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	A. 1840 KeV B. 1/1840 KeV C. 1 KeV D. 920 KeV
2	One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is	A. 0.1 V B. 8 V C. 2 V D. 0.5 V
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	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	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
6	The fractional change in resistance per kelvin is known as	A. temperature coefficient B. resistance coefficient C. super temperature D. critical temperature
7	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
8	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area
9	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
10	The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will	A. Increase B. Decrease C. Remain F D. Become 10F/9

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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 current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

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

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

The electric field due to an infinite long thin wire at a distance R varies as

Which one of the following has larger value of relative permitivity Erat room temperature?

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

Specific resistance of a wire depends upon

One electron volt is equal to

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

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

The resistivity of a substance depends upon the

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

The minimum charge on any object can not be less than

The electric lines of force are

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

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

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

The liquid which conduct current is known as

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Heating effect caused by an electric circuit is written

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 energy stored in a charge capacitor

Ohm is the unit of

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

Capacitance of two or more capacitors

The relation between charge 'Q' and current 'I' is given by

The SI unit of electric field intensity is

The charge per unit time through any cross-section of a conductor is called

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

Which one of the following has larger value of relative permitivity E_rat room temperature?

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

What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?