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 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	A. Zero B. 10Ω C. 1Ω D. 0.10Ω
2	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
3	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature
4	In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes	A. Four-fold B. One-half C. One-fourth D. Zero
5	If the distance of separation between two chares is increased, the electrical potential energy of the system will	A. Increase B. Decrease C. May increase or decrease D. Remain the same
6	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
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	Potentiometer is more sensitive than voltmeter, because	A. Voltmeter has a very high resistance B. Voltmeter has a very low resistance C. Potentiometer does not draw any current from a source of unknown potential difference D. Potentiometer is sensitive
9	Ohm established a relation between	A. voltage and resistance B. voltage and charge C. voltage and current D. voltage resistance and charge
10	An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be	A. 1 MeV B. 2 MeV C. 4 MeV D. 8 MeV

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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 medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

In a charged capacitor the energy is stored in

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

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

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

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

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

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

The electric intensity at infinite distance from the point charge will be

The graphical representation of ohm's law is

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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

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

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

Specific resistance of a wire depends upon

The unit of conductance is

The capacity of a parallel plat capacitor depends on the

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Which of the following represents an electric current?

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Ohm is the unit of

The electric lines of force are

The speed of randomly moving electrons depends upon

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

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

The SI unit of conductivity is

Electron volt is the unit of.

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

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

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