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	Equal charges are given to two spheres of different radii. The potential will	A. Be more on the smaller sphere B. Be more on the bigger sphere C. Be equal on both the sphere D. Depend on the nature of the material of the sphere
2	Battery is charged in motor cars, which is based on	A. Chemical effect B. Magnetic effect C. Electric effect D. None
3	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
4	Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then	A. R₁= 2R₂ B. R₂= 2R₁ C. R₂=4R₁ D. R₁= 4R₂
5	The conductivity of a superconductor is	A. Infinite B. Very large C. Very small D. Zero
6	If the two charges in Coulomb's law have double distance between them, then electric force	A. Becomes two-fold B. Becomes four-fold C. Remains the same D. None of these
7	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)	A. 2 B. 1 C. 0.5 D. 1.5
8	The thermistors are usually made of	A. Metals with low temperature coefficient of resistivity B. Metals with high temperature coefficient of resistivity C. Metal oxides with high temperature coefficient of resistivity D. Semi conducting materials having low temperature coefficient of resistivity
9	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions
10	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference

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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

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

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

The resistivity of a substance depends upon the

The SI unit of permitivity is

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

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

Capacitance of two or more capacitors

If the length of the conductor is double and its cross sectional area is halved, its conductance will

The electric lines of force are

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

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

The ohm's is defined as

The unit of conductance is

Electric generators which convert mechanical energy into

Magnetic effect at a point caused due to flow a current depend upon the

The resistance of the given conductor can be increased by

Cause of heat production in a current carrying conductor is

Which one of the following is the unit of electric field intensity

An electric charge at rest is

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

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

Potentiometer is more sensitive than voltmeter, because

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

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

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

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

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

In bringing an electron towards another electron, electrostatic potential energy of system

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

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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?