ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
2	Consider a spherical shell of metal at he centre of which a positive point charge is kept	A. The electric filed is zero outside the shell B. The electric field is zero everywhere C. The electric field is zero in the region inside the shell D. The electric field is non-zero in both regions outside and inside the shell
3	The graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
4	If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy	A. Ve B. V/e C. e/V D. 2Ve
5	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	A. q = Q/4 B. q = Q/2 C. q = ! D. None of these
6	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
7	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
8	At ordinary temperature, an increase in temperature increases the conductivity of	A. Conductor B. Semiconductor C. Insulator D. Alloy
9	Some charge is being given to a conductor. Then its potential	A. Is maximum at surface B. Is maximum at centre C. Is remain same throughout the conductor D. Is maximum somewhere between surface and centre
10	In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be	A. 0.4 A B. 11.4 A C. 9.8 A D. 10.6 A

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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

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

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

The concept of field theory was put forward by

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

At ordinary temperature, an increase in temperature increases the conductivity of

Battery is charged in motor cars, which is based on

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

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

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

The unit of intensity of electric field is

Electron volt is the unit of.

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 causes production of heat when current is set up in a wire?

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

One electron volt is equal to

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

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

Heating effect caused by an electric circuit is written

The nature of capacity of electrostatic capacitor depends on

The capacity of a parallel plat capacitor depends on the

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

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

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

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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?

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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

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

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

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

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