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	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
2	A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is	A. Charge Q B. Potential V C. Capacity D. Energy U
3	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
4	An electric charge at rest is	A. Only an electric field B. Only a magnetic field C. Both electric and magnetic fields D. None of the above
5	The graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
6	The resistance of an incandescent lamp is	A. Smaller when switched on B. Greater when switched off C. The same whether it is switch off or switch on D. Greater when switched on
7	A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?	A. 108 g B. 10.8 g C. 0.8 g D. 108/0.8 g
8	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
9	The unit of resistivity is	A. ohm B. ohm-m² C. ohm-meter D. ohm-m^-1
10	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω

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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 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

The unit of resistivity is

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

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

The capacity of a parallel plat capacitor depends on the

The charge carriers in electrolyte are positive and negative

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

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

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

In bringing an electron towards another electron, electrostatic potential energy of system

The charge carriers in gases are

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

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

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

Cause of heat production in a current carrying conductor is

Which of the following represents an electric current?

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

The earth's potential is taken as

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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

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

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

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

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

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

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

The electric intensity outside the two oppositely charged parallel metal plates is

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

ECAT Physics Chapter 12 Important MCQ's

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Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be