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 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
2	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	A. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
3	The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
4	Electron volt is the unit of.	A. Potential difference B. Energy C. Resistance D. Capacitance
5	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these
6	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
7	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions
8	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
9	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
10	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1

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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

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

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

Coulomb's force between two point charges depends upon

The charge carriers in gases are

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

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

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

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

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

The earth's potential is taken as

The ohm's is defined as

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

The value of electrical constant of proportionality k is

A conducting wire is drawn to double its length. Final resistivity of the material will be

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

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

The relation V = IR represents

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

An electric charge at rest 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

The minimum charge on any object can not be less than

The graphical representation of ohm's law is

The SI unit of current is

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

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

The conductivity of a superconductor is

If the length of the conductor is double and its cross sectional area is halved, its conductance will

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ECAT Physics Chapter 12 Important MCQ's

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What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

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

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