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 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
2	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
3	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)	A. 2 B. 1 C. 0.5 D. 1.5
4	Thermocouple is an arrangement of two different metals	A. To convert heat energy in to electrical energy B. To produce more heat C. To convert heat energy into chemical energy D. To convert electric energy in to heat energy
5	The charge carriers in gases are	A. electrons B. ions C. protons D. ions and electrons
6	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	A. 120 C B. 240 C C. 20 C D. 4 C
7	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
8	Resistance of a conductor depends upon	A. the quantity of current passing through it B. the voltage applied between its end C. its dimensions, physical state and nature of its material D. all of the above
9	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these
10	The electric lines of force are	A. Imaginary B. Physically existing everywhere C. Physically existing near the charge D. All of the above

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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

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

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

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

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

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

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

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

The conductivity of a superconductor is

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

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

The resistance of the given conductor can be increased by

Magnetic effect at a point caused due to flow a current depend upon the

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

The capacity of a parallel plat capacitor depends on the

The SI unit of permitivity is

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Free electrons are

In a voltmeter the conduction takes place due to

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Electron volt is the unit of

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

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

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

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

Ohm's law states that

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 SI unit of capacitance is

The SI unit of electric field intensity is

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

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

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ECAT Physics Chapter 12 Important MCQ's

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The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

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