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 SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
2	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
3	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
4	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
5	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²
6	10⁶electrons are moving through a wire per second, the current developed is	A. 1.6 x 10^-19 B. 1 A C. 1.6 x 10^-15A D. 10⁶A
7	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	A. 1840 KeV B. 1/1840 KeV C. 1 KeV D. 920 KeV
8	A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when	A. q = Q/4 B. q = Q/2 C. q = ! D. None of these
9	The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is	A. 10 KJ B. 5 KJ C. 2 KJ D. 1 KJ
10	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

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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

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

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

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

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

The relation V = IR represents

Electric generators which convert mechanical energy into

The nature of capacity of electrostatic capacitor depends on

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

The SI unit of capacitance is

In a charged capacitor the energy is stored in

The electric lines of force are

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Coulomb force, when any material medium is placed between two charges

The SI unit of permitivity is

Battery is charged in motor cars, which is based on

The graphical representation of ohm's law is

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

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

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

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

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

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Specific resistance of a wire depends upon

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

The minimum charge on any object can not be less than

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

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

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

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

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ECAT Physics Chapter 12 Important MCQ's

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Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

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