ECAT Pre General Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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
2	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
3	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
4	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
5	The relation V = IR represents	A. Ampere law B. Faraday's law C. Ohm's law D. Len's law
6	The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is	A. 21 x 10³+ 10% B. 23 x 10¹+ 10% C. 21 x 10³+ 5% D. 12 x 10³+ 5%
7	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
8	The SI unit of conductivity is	A. ohm-m B. ohm^-1m^-1 C. ohm-m^-1 D. ohm^-1m
9	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these
10	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these

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ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

The SI unit of permitivity is

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

The electric intensity at infinite distance from the point charge will be

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

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

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

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

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Heating effect caused by an electric circuit is written

Electric potential of earth is taken to be zero because the earth is good

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

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

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

Ohm is the unit of

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

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

The charge per unit time through any cross-section of a conductor is called

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

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 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

Which one of the following has larger value of relative permitivity Erat room temperature?

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

The relation between charge 'Q' and current 'I' is given by

The unit of resistivity is

An electric charge at rest 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 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

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

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

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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

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

Which one of the following has larger value of relative permitivity E_rat room temperature?