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 value of electrical constant of proportionality k is	A. 9 x 10⁹Nm²C^-2 B. 9 x 10^-9Nm²C^-2 C. 9 x 10¹⁰Nm²C² D. 9.85 x 10^-12N^-1C^-2
2	Electric potential of earth is taken to be zero because the earth is good	A. Semiconductor B. Conductor C. Insulator D. Dielectric
3	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
4	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
5	A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is	A. Zero B. 0.5Ω C. 1.1Ω D. 5.0Ω
6	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
7	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
8	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
9	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	A. 180 watt B. 10 watt C. 20 watt D. 60 watt
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 60 W bulb operates on 220 V supply. The current flowing through the bulb is

The speed of randomly moving electrons depends upon

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

The electric field due to an infinite long thin wire at a distance R varies as

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

Electric generators which convert mechanical energy into

Resistance of a conductor depends upon

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The dot product of electric field intensity E and vector area A is called

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

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

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

The unit of resistivity is

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

The electric field will be uniform

Electric flux is defined by the relation

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

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 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 wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

Free electrons are

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

Physicist George Simon ohm was a

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

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

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

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

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

The unit of resistance is

Which of the following represents an electric current?

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ECAT Physics Chapter 12 Important MCQ's

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