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 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
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	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
4	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
5	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
6	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. Zero B. 5μC m^-2 C. 20μC m^-2 D. 8μC m^-2
7	The dot product of electric field intensity E and vector area A is called	A. Electric potential B. Electric flux C. Electric field D. Magnetic field
8	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
9	If a 40 watt light bulb burns for 2 hours. how much heat is generated	A. 288 x 10³J B. 288 x 10⁸J C. 288 x 10⁵J D. 288 x 10⁶J
10	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰

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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

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

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

The resistance of an incandescent lamp is

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

The liquid which conduct current is known as

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

The ohm's is defined as

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

Coulomb's force between two point charges depends upon

The graphical representation of ohm's law is

The energy stored in a charge capacitor

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

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

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?

In a voltmeter the conduction takes place due to

Some charge is being given to a conductor. Then its potential

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

Resistor is a device which convert electric energy to

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 value of electrical constant of proportionality k is

The resistance of a conductor does not depend on its

Heating effect caused by an electric circuit is written

The SI unit of current is

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

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Ohm is the unit of

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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

What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is