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 closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
2	An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)	A. Q/4πr² B. 2Q/4πr² C. Q.d D. Zero
3	If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us	A. parabola B. straight line C. hyper bola D. ellipse
4	10⁶electrons are moving through a wire per second, the current developed is	A. 1.6 x 10^-19 B. 1 A C. 1.6 x 10^-15A D. 10⁶A
5	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
6	The liquid which conduct current is known as	A. heating effect B. chemical energy C. electrolyte D. ohm's law
7	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
8	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
9	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	A. 7.20 N B. 11.25 N C. 22.50 N D. 45.00
10	The ohm's is defined as	A. 1 ampere / 1 volts B. 1 coulomb / 1 volt C. 1 volt / 1 ampere D. 1 volt / 1 coulomb

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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

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

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

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

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Which of the following does not obey ohm's law?

Surface density of charge is defined as

The graphical representation of ohm's law is

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

The resistance of a conductor does not depend on its

The earth's potential is taken as

The speed of randomly moving electrons depends upon

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

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

If a 40 watt light bulb burns for 2 hours. how much heat is generated

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

Current provided by a battery is maximum when

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

The value of electrical constant of proportionality k is

The electric flux from a closed surface

Resistance of a conductor depends upon

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

Which one of the following has larger value of relative permitivity Erat room temperature?

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

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

One coulomb per second is equal to

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

Specific resistance of a wire depends upon

An electric charge at rest is

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

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

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

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

Which one of the following has larger value of relative permitivity E_rat room temperature?