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	Ohm's law states that	A. The current through a resistor is directly proportional to the applied voltage B. The voltage across a resistor is directly proportional to the current passing through it C. Resistance is the constant of proportionality between the voltage and current D. all of these
2	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
3	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
4	Physicist George Simon ohm was a	A. German physical B. French physicist C. Chinese physicist D. Russian physicist
5	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions
6	A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance	A. Increase k time B. Decreases k times C. Decreases 1/K times D. Remains unchanged
7	The graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
8	Electric generators which convert mechanical energy into	A. solar energy B. thermal energy C. kinetic energy D. electrical energy
9	Which one of the following has larger value of relative permitivity E_rat room temperature?	A. Vaccum B. Air C. Glass D. Water
10	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	A. -10 N B. +10 N C. +20 N D. -20 N

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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

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

Free electrons are

The unit of conductance is

The current through a metallic conductor is due to the motion of

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

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

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

One coulomb per second is equal to

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

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

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

The resistance of a conductor does not depend on its

Coulomb's force between two point charges depends upon

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Coulomb force, when any material medium is placed between two charges

Specific resistance of a wire depends upon

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

Resistance of a conductor is increased, the currant will

The electric flux is linked with a surface will be maximum when

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

The dot product of electric field intensity E and vector area A is called

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

The resistance of the given conductor can be increased by

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

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

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

Battery is charged in motor cars, which is based on

The unit of intensity of electric field is

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

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

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