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	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
2	If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be	A. 6 ohm B. 4 ohm C. zero ohm D. 1.33 ohm
3	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
4	An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be	A. 1 MeV B. 2 MeV C. 4 MeV D. 8 MeV
5	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
6	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
7	For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is	A. 3/5 ohm B. 2 ohm C. 6/5 ohm D. 3 ohm
8	The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is	A. 10Ω B. 20Ω C. 30Ω D. 40Ω
9	The electric flux from a closed surface	A. Is independent of the shape of the surface B. Depends on the charge enclosed by the surface C. Both a and b D. None of the above
10	Coulomb force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these

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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

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

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

Current provided by a battery is maximum when

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

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

Electron volt is the unit of.

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

The unit of resistivity is

The energy stored in a charge capacitor

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

The thermistors are usually made of

Ohm's law states that

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

The graphical representation of ohm's law is

106electrons are moving through a wire per second, the current developed is

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

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

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

Heating effect caused by an electric circuit is written

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

The electric intensity at infinite distance from the point charge will be

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 nature of capacity of electrostatic capacitor depends on

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 relation V = IR represents

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

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 value of electrical constant of proportionality k is

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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?

10⁶electrons are moving through a wire per second, the current developed is

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