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	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
2	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature
3	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	A. Zero B. F/2 C. F D. 2F
4	The liquid which conduct current is known as	A. heating effect B. chemical energy C. electrolyte D. ohm's law
5	Electric potential of earth is taken to be zero because the earth is good	A. Semiconductor B. Conductor C. Insulator D. Dielectric
6	The earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite
7	The relation V = IR represents	A. Ampere law B. Faraday's law C. Ohm's law D. Len's law
8	The charge carriers in gases are	A. electrons B. ions C. protons D. ions and electrons
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	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

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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

The unit of resistivity is

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

The unit of conductance is

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

The energy stored in a charge capacitor

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

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

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

The charge carriers in electrolyte are positive and negative

The SI unit of conductivity is

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Ohm's law states that

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

The electric field intensity at a point due to a point charge

The liquid which conduct current is known as

The electric flux from a closed surface

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

The capacitance of a parallel plate capacitor depends upon

The electric intensity outside the two oppositely charged parallel metal plates is

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

If we increase the distance between two plates of the capacitor, the capacitance will

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

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

The fractional change in resistance per kelvin is known as

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

Which of the following does not obey ohm's law?

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

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

Potentiometer is more sensitive than voltmeter, because

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ECAT Physics Chapter 12 Important MCQ's

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The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is