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	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these
2	The thermistors are usually made of	A. Metals with low temperature coefficient of resistivity B. Metals with high temperature coefficient of resistivity C. Metal oxides with high temperature coefficient of resistivity D. Semi conducting materials having low temperature coefficient of resistivity
3	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
4	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
5	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
6	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
7	The SI unit of conductivity is	A. ohm-m B. ohm^-1m^-1 C. ohm-m^-1 D. ohm^-1m
8	Some charge is being given to a conductor. Then its potential	A. Is maximum at surface B. Is maximum at centre C. Is remain same throughout the conductor D. Is maximum somewhere between surface and centre
9	At any point on the right bisector of the line joining two equal and opposite charges	A. At electric field is zero B. The electric potential is zero C. The electric potential decreases with increasing distance from the centre D. The electric field is perpendicular to the line joining the charges
10	The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is	A. 21 x 10³+ 10% B. 23 x 10¹+ 10% C. 21 x 10³+ 5% D. 12 x 10³+ 5%

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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

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

The conductivity of a superconductor is

Specific resistance of a wire depends upon

Which one of the following causes production of heat when current is set up in a wire?

The capacity of a parallel plat capacitor depends on the

The electric lines of force are

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

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

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

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

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 minimum charge on any object can not be less than

Electric flux is defined by the relation

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

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 capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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

At ordinary temperature, an increase in temperature increases the conductivity of

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

The SI unit of permitivity is

Some charge is being given to a conductor. Then its potential

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

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

Electron volt is the unit of

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

The value of electrical constant of proportionality k is

The speed of randomly moving electrons depends upon

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

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

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ECAT Physics Chapter 12 Important MCQ's

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