ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Class Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	Physicist George Simon ohm was a	A. German physical B. French physicist C. Chinese physicist D. Russian physicist
2	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
3	Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be	A. 711μF B. 611μF C. 811μF D. 511μF
4	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
5	The electric flux from a closed surface	A. Is independent of the shape of the surface B. Depends on the charge enclosed by the surface C. Both a and b D. None of the above
6	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
7	One coulomb of charge is created by	A. 10 electrons B. 1.6 x 10^-19electrons C. 6.25 x 10¹⁸electrons D. 6.25 x 10²¹electrons
8	A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is	A. C B. C/2 C. Zero D. 2C
9	The electric field will be uniform	A. Near a positive point charge B. Near a negative point charge C. Between two oppositely charged parallel metal plates D. None of above
10	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²

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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

If the two charges in Coulomb's law have double distance between them, then electric force

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

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

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

Cause of heat production in a current carrying conductor is

The unit of resistance is

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 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

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

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

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

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

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

Electron volt is the unit of.

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?

Electron volt is the unit of

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

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 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

Potentiometer is more sensitive than voltmeter, because

Physicist George Simon ohm was a

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

The resistance of an incandescent lamp is

Thermocouple is an arrangement of two different metals

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

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

The thermistors are usually made of

The resistivity of a substance depends upon the

The SI unit of electric flux is

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

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ECAT Class Physics Chapter 12 Important MCQ's

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Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be