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 permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
2	Electron volt is the unit of.	A. Potential difference B. Energy C. Resistance D. Capacitance
3	The SI unit of capacitance is	A. Farad B. Henry C. Ohm D. Volt
4	The minimum charge on any object can not be less than	A. 1.6 x 10^-19C B. 3.2 x 10^-19C C. 1.0 C D. 4.8 x 10^-19C
5	The unit of conductance is	A. ohm B. meter C. mho D. ohm-meter
6	One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is	A. 0.1 V B. 8 V C. 2 V D. 0.5 V
7	The resistance of the given conductor can be increased by	A. Increasing the area B. Changing resistivity C. Decreasing the length D. None of the above because change does not matter because in any case the volume remains the same
8	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
9	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
10	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite

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

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

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

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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

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

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

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

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

The electrode connected with the positive terminal of the current source is called

Thermocouple is an arrangement of two different metals

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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

The conductivity of a superconductor is

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

Ohm's law states that

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

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

Electron volt is the unit of.

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

Electric flux is defined by the relation

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 liquid which conduct current is known as

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

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

Resistor is a device which convert electric energy to

The nature of capacity of electrostatic capacitor depends on

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

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates 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?