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 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
2	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
3	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
4	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
5	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
6	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
7	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
8	If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be	A. 6 ohm B. 4 ohm C. zero ohm D. 1.33 ohm
9	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?	A. 60 W bulb B. 100 W bulb C. Both equally D. None of these
10	A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then	A. The charge in the plates reduces and potential difference increase B. Potential difference between the plates increase, stored energy decreases and charge remains the same C. Potential difference between the plates decreases and charge remains unchanged D. None of the above

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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 speed of randomly moving electrons depends upon

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

The resistance of a conductor does not depend on its

The electric field intensity at a point due to a point charge

The ohm's is defined as

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

The SI unit of electric flux is

The concept of field theory was put forward by

Electric generators which convert mechanical energy into

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

The unit of resistivity is

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

One joule is equal to

Surface density of charge is defined as

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

Current provided by a battery is maximum when

Potentiometer is more sensitive than voltmeter, because

In a voltmeter the conduction takes place due to

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

The unit of resistance is

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

The conductivity of a superconductor is

The SI unit of electric field intensity is

Heating effect caused by an electric circuit is written

An electric charge at rest is

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its 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 capacitance of a parallel plate capacitor depends upon

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

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