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	A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J	A. 5 B. 0.5 C. 0.005 D. 50
2	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
3	In a charged capacitor the energy is stored in	A. Both in positive and negative charges B. Positive charges C. The edges of the capacitor plates D. The electric field between the plates
4	Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then	A. R₁= 2R₂ B. R₂= 2R₁ C. R₂=4R₁ D. R₁= 4R₂
5	The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is	A. 10Ω B. 20Ω C. 30Ω D. 40Ω
6	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
7	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	A. They have the same potential B. They have the same amount of charge C. They have the same capacity D. They have the same shape
8	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	A. Zero B. 10Ω C. 1Ω D. 0.10Ω
9	A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts	A. 1310 W B. 670 W C. 810 W D. 1210 W
10	The conductivity of a superconductor is	A. Infinite B. Very large C. Very small D. Zero

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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

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

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

The liquid which conduct current is known as

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

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

The unit of resistance is

Which one of the following is the unit of electric field intensity

One joule is equal to

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

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 unit of intensity of electric field is

Electron volt is the unit of

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

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

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

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

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

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

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

One electron volt is equal to

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 SI unit of electric field intensity is

If a 40 watt light bulb burns for 2 hours. how much heat is generated

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Ohm established a relation between

Capacitance of two or more capacitors

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

The electrode connected with the positive terminal of the current source is called

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