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	The SI unit of current is	A. watt B. coulomb C. volt D. ampere
2	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
3	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
4	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
5	For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is	A. 3/5 ohm B. 2 ohm C. 6/5 ohm D. 3 ohm
6	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
7	If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
8	Resistance of a conductor depends upon	A. the quantity of current passing through it B. the voltage applied between its end C. its dimensions, physical state and nature of its material D. all of the above
9	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
10	The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V

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

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

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

A conducting wire is drawn to double its length. Final resistivity of the material will be

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Battery is charged in motor cars, which is based on

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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

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

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

Physicist George Simon ohm was a

Which of the following represents an electric current?

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

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

The resistance of the given conductor can be increased by

One coulomb of charge is created by

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

The speed of randomly moving electrons depends upon

Ohm is the unit of

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

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

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

The capacitance of a parallel plate capacitor depends upon

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

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

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 resistivity of a substance depends upon the

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

The SI unit of capacitance is

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ECAT Physics Chapter 12 Important MCQ's

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

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