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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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The minimum charge on any object can not be less than	A. 1.6 x 10^-19C B. 3.2 x 10^-19C C. 1.0 C D. 4.8 x 10^-19C
2	In a charged capacitor the energy is stored in	A. Both in positive and negative charges B. Positive charges C. The edges of the capacitor plates D. The electric field between the plates
3	A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?	A. Electric potential at the surface of the cube is zero B. Electric potential within the cube is zero C. Electric filed is normal to the surface of the cube D. Electric filed varies within the cube
4	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
5	A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to	A. -q B. +q C. -2q D. +4q
6	The unit of resistivity is	A. ohm B. ohm-m² C. ohm-meter D. ohm-m^-1
7	Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be	A. 0.52 A B. 1 mA C. 0.7 mA D. 1.4 A
8	A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is	A. C B. C/2 C. Zero D. 2C
9	A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts	A. 1310 W B. 670 W C. 810 W D. 1210 W
10	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature

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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

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

The concept of field theory was put forward by

The earth's potential is taken as

The fractional change in resistance per kelvin is known as

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

Electric generators which convert mechanical energy into

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

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

The value of electrical constant of proportionality k is

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

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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

The relation V = IR represents

If electric and gravitational force on an electron in a uniform electric field 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

In a voltmeter the conduction takes place due to

The thermistors are usually made of

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

Ohm's law states that

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Electron volt is the unit of

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

Resistor is a device which convert electric energy to

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

The SI unit of electric field intensity is

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

The liquid which conduct current is known as

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

The unit of conductance is

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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?

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