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 relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
2	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
3	A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be	A. Zero B. 10Ω C. 1Ω D. 0.10Ω
4	Battery is charged in motor cars, which is based on	A. Chemical effect B. Magnetic effect C. Electric effect D. None
5	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
6	What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?	A. 10^-1A B. 10^-2A C. 10^-4A D. 1 mA
7	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	A. 200 J B. 100 J C. 1000 J D. 400 J
8	An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be	A. 1 MeV B. 2 MeV C. 4 MeV D. 8 MeV
9	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
10	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

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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

One coulomb per second is equal to

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

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

Resistance of a conductor is increased, the currant will

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

Thermocouple is an arrangement of two different metals

The charge carriers in electrolyte are positive and negative

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

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

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

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

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Electron volt is the unit of.

Resistance of a conductor depends upon

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

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

The unit of resistance is

Potentiometer is more sensitive than voltmeter, because

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

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

In a charged capacitor the energy is stored in

The thermistors are usually made of

The resistance of the given conductor can be increased by

If the length of the conductor is double and its cross sectional area is halved, its conductance will

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

If we increase the distance between two plates of the capacitor, the capacitance will

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

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

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ECAT Physics Chapter 12 Important MCQ's

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In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

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