ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120
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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	Electric flux is defined by the relation	A. E.A. B. E x A C. E/A D. none of these
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	If the length of the conductor is double and its cross sectional area is halved, its conductance will	A. Increase four fold B. Become one-fourth C. Become one-half D. Remains unchanged
4	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
5	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	A. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
6	The relation V = IR represents	A. Ampere law B. Faraday's law C. Ohm's law D. Len's law
7	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
8	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
9	A conducting wire is drawn to double its length. Final resistivity of the material will be	A. Double of the original one B. Half of the original one C. One fourth of the original one D. Same as original one
10	Which one of the following causes production of heat when current is set up in a wire?	A. Fall of electrons from higher orbits to lower orbits B. Inter-atomic collisions C. Inter-electron collisions D. Collisions of conduction electron with atoms

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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

Electron volt is the unit of.

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

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

Solar cell converts sunlight directly into

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Resistance of a conductor depends upon

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

If electric and gravitational force on an electron in a uniform electric field will be

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

106electrons are moving through a wire per second, the current developed 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

The electric lines of force are

The resistance of an incandescent lamp is

The resistivity of a substance depends upon the

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

Battery is charged in motor cars, which is based on

The capacitance of a parallel plate capacitor depends upon

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

The unit of resistance is

The potential difference across each resistance in series combination is

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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

Electric generators which convert mechanical energy into

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

Resistor is a device which convert electric energy to

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

Heating effect caused by an electric circuit is written

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ECAT Physics Chapter 12 Important MCQ's

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The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

10⁶electrons are moving through a wire per second, the current developed is

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