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 SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
2	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
3	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
4	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω
5	What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?	A. 10^-1A B. 10^-2A C. 10^-4A D. 1 mA
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	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
8	Surface density of charge is defined as	A. Charge per unit volume B. Charge per unit length C. Charge per unit area D. Charge per unit mass
9	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
10	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area

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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

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

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

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

Equal charges are given to two spheres of different radii. The potential will

One coulomb of charge is created by

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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

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

In a charged capacitor the energy is stored in

The SI unit of conductivity is

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

Ohm's law states that

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

In a voltmeter the conduction takes place due to

Electric generators which convert mechanical energy into

The resistivity of a substance depends upon the

The charge carriers in electrolyte are positive and negative

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?

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

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

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

The electric flux from a closed surface

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

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

The relation V = IR represents

Heating effect caused by an electric circuit is written

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

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Coulomb's force between two point charges depends upon

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

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ECAT Physics Chapter 12 Important MCQ's

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The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

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