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 capacitor of capacity 1μF is charged to 1 KV. The energy stored in J	A. 5 B. 0.5 C. 0.005 D. 50
2	The dot product of electric field intensity E and vector area A is called	A. Electric potential B. Electric flux C. Electric field D. Magnetic field
3	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these
4	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	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
5	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
6	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
7	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
8	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above
9	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
10	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	A. q = Q/4 B. q = Q/2 C. q = ! D. None of these

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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 SI unit of electric field intensity is

The graphical representation of ohm's law is

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 resistivity of a substance depends upon the

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

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

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 SI unit of permitivity is

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

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

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

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

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

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

The electric lines of force are

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 charge per unit time through any cross-section of a conductor is called

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

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

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

The relation V = IR represents

The unit of resistivity is

If the two charges in Coulomb's law have double distance between them, then electric force

Surface density of charge is defined as

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

The SI unit of conductivity is

The electric field will be uniform

One coulomb of charge is created by

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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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

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