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	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
2	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
3	The fractional change in resistance per kelvin is known as	A. temperature coefficient B. resistance coefficient C. super temperature D. critical temperature
4	Which one of the following has larger value of relative permitivity E_rat room temperature?	A. Vaccum B. Air C. Glass D. Water
5	The liquid which conduct current is known as	A. heating effect B. chemical energy C. electrolyte D. ohm's law
6	Magnetic effect at a point caused due to flow a current depend upon the	A. Quantity of current B. Distance from current C. Both the quantity of current and distance from current element D. None of the all
7	If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is	A. one ohm B. one joule C. one volt D. one ampere
8	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
9	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	A. 1 : 2 B. 2 : 1 C. 1 : 4 D. 4 : 1
10	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²

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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 speed of randomly moving electrons depends upon

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

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

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

At any point on the right bisector of the line joining two equal and opposite charges

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

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 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

The SI unit of current is

The charge carriers in gases are

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

At ordinary temperature, an increase in temperature increases the conductivity of

In a voltmeter the conduction takes place due to

Surface density of charge is defined as

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

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

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

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

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

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

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

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

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

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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

Resistance of a conductor is increased, the currant will

Specific resistance of a wire depends upon

The electric flux is linked with a surface will be maximum when

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ECAT Physics Chapter 12 Important MCQ's

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

An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?