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 capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
2	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
3	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
4	Specific resistance of a wire depends upon	A. Length B. Cross-section area C. Mass D. None
5	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
6	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these
7	Which one of the following has larger value of relative permitivity E_rat room temperature?	A. Vaccum B. Air C. Glass D. Water
8	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	A. 120 C B. 240 C C. 20 C D. 4 C
9	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
10	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these

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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

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

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

Resistance of a conductor is increased, the currant will

The capacitance of a parallel plate capacitor depends upon

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

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

Electric flux is defined by the relation

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

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

Ohm established a relation between

The concept of field theory was put forward by

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

Which one of the following causes production of heat when current is set up in a wire?

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

The relation V = IR represents

The SI unit of capacitance is

The SI unit of conductivity is

The minimum charge on any object can not be less than

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

The unit of intensity of electric field is

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

The unit of resistance is

The electric lines of force are

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

The charge carriers in electrolyte are positive and negative

Resistor is a device which convert electric energy to

The SI unit of permitivity is

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 electric charge at rest is

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

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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