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 excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is	A. 25 B. 225 C. 625 D. 1250
2	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
3	Electric flux is defined by the relation	A. E.A. B. E x A C. E/A D. none of these
4	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	A. 1/3 V B. 2/3 V C. 3/2 V D. 3V
5	If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
6	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
7	Electron volt is the unit of.	A. Potential difference B. Energy C. Resistance D. Capacitance
8	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
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 earth's potential is taken as	A. Negative B. Positive 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

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

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

Resistor is a device which convert electric energy to

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

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

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

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

The ohm's is defined as

Battery is charged in motor cars, which is based on

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

Electric flux is defined by the relation

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

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

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

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

The resistivity of a substance depends upon the

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

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

In a charged capacitor the energy is stored in

The fractional change in resistance per kelvin is known as

Surface density of charge is defined as

The energy stored in a charge capacitor

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

The resistance of the given conductor can be increased by

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

The electric field will be uniform

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

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

The electric field intensity at a point due to a point charge

The capacitance of a parallel plate capacitor depends upon

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ECAT Physics Chapter 12 Important MCQ's

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An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be