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 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
2	Coulomb force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these
3	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²
4	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
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 unit of conductance is	A. ohm B. meter C. mho D. ohm-meter
7	The value of electrical constant of proportionality k is	A. 9 x 10⁹Nm²C^-2 B. 9 x 10^-9Nm²C^-2 C. 9 x 10¹⁰Nm²C² D. 9.85 x 10^-12N^-1C^-2
8	The unit of resistance is	A. volt B. ampere C. ohm D. coat
9	Cause of heat production in a current carrying conductor is	A. Collisions of free electrons with one another B. High drift speed of free electrons C. Collisions of free electrons with atoms or ions of conductor D. High resistance value
10	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

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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

Thermocouple is an arrangement of two different metals

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

The unit of conductance is

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

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

Some charge is being given to a conductor. Then its potential

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

The thermistors are usually made of

Consider a spherical shell of metal at he centre of which a positive point charge is kept

One joule is equal to

The electric flux from a closed surface

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

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

Which one of the following has larger value of relative permitivity Erat room temperature?

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Solar cell converts sunlight directly into

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

Coulomb's force between two point charges depends upon

Surface density of charge is defined as

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

The relation V = IR represents

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

Battery is charged in motor cars, which is based on

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

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

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

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

In a charged capacitor the energy is stored in

The electric field will be uniform

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ECAT Physics Chapter 12 Important MCQ's

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Which one of the following has larger value of relative permitivity E_rat room temperature?

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