ECAT Pre General Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

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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	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	If the length of the conductor is double and its cross sectional area is halved, its conductance will	A. Increase four fold B. Become one-fourth C. Become one-half D. Remains unchanged
4	Which one of the following has larger value of relative permitivity E_rat room temperature?	A. Vaccum B. Air C. Glass D. Water
5	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
6	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
7	One electron volt is equal to	A. 1.6 x 1019eV B. 6.25 x 1018 eV C. 1.6 x 1018 eV D. 6.25 x 1019eV
8	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
9	If electric and gravitational force on an electron in a uniform electric field will be	A. E=mg/q B. E=q/mg C. E=,g/q D. E=qg/m
10	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C

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ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

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

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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

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

The SI unit of capacitance is

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

The concept of field theory was put forward by

Physicist George Simon ohm was a

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 electric field will be uniform

Surface density of charge is defined as

In bringing an electron towards another electron, electrostatic potential energy of system

Potentiometer is more sensitive than voltmeter, because

The conductivity of a superconductor is

The liquid which conduct current is known as

An electric charge at rest is

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

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

The SI unit of electric flux is

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?

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

Battery is charged in motor cars, which is based on

The ohm's is defined as

The speed of randomly moving electrons depends upon

Resistor is a device which convert electric energy to

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

Electric flux is defined by the relation

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

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ECAT Physics Chapter 12 Important MCQ's

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