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	10⁶electrons are moving through a wire per second, the current developed is	A. 1.6 x 10^-19 B. 1 A C. 1.6 x 10^-15A D. 10⁶A
2	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
3	The relation V = IR represents	A. Ampere law B. Faraday's law C. Ohm's law D. Len's law
4	Capacitance of two or more capacitors	A. Increases in series combination B. Increases in parallel combination C. Remains unchanged D. None of the above
5	Coulomb force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these
6	The fractional change in resistance per kelvin is known as	A. temperature coefficient B. resistance coefficient C. super temperature D. critical temperature
7	A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?	A. 200 W B. 302.5 C. 250 W D. 350 W
8	Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be	A. 711μF B. 611μF C. 811μF D. 511μF
9	Cause of heat production in a current carrying conductor is	A. Collisions of free electrons with one another B. High drift speed of free electrons C. Collisions of free electrons with atoms or ions of conductor D. High resistance value
10	The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is	A. 10 KJ B. 5 KJ C. 2 KJ D. 1 KJ

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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 colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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 capacity of a parallel plat capacitor depends on the

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

The electric intensity at infinite distance from the point charge will be

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

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

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

Specific resistance of a wire depends upon

The unit of intensity of electric field is

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 value of electrical constant of proportionality k is

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 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 unit of resistivity is

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

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

The thermistors are usually made of

Ohm's law states that

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

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

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

Resistance of a conductor is increased, the currant will

The minimum charge on any object can not be less than

Battery is charged in motor cars, which is based on

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

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ECAT Physics Chapter 12 Important MCQ's

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A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be