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 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
2	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	A. 3.9 B. 4 C. 4.2 D. 6
3	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
4	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these
5	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these
6	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
7	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
8	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
9	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
10	If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us	A. parabola B. straight line C. hyper bola D. ellipse

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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 hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

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

Surface density of charge is defined as

One coulomb per second is equal to

The liquid which conduct current is known as

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

Some charge is being given to a conductor. Then its potential

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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

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

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

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

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 value of electrical constant of proportionality k is

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

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

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

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

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

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

Which of the following does not obey ohm's law?

One joule is equal to

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

In a charged capacitor the energy is stored in

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

Consider a spherical shell of metal at he centre of which a positive point charge is kept

Ohm is the unit of

The SI unit of conductivity is

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ECAT Physics Chapter 12 Important MCQ's

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

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

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is