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	Magnetic effect at a point caused due to flow a current depend upon the	A. Quantity of current B. Distance from current C. Both the quantity of current and distance from current element D. None of the all
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 capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
4	Physicist George Simon ohm was a	A. German physical B. French physicist C. Chinese physicist D. Russian physicist
5	Which one of the following is the unit of electric field intensity	A. JC^-1 B. Vm^-1 C. Cm^-1 D. CJ^-1
6	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
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	Which of the following does not obey ohm's law?	A. Copper B. Al C. Diode D. None
9	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature
10	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	A. 180 watt B. 10 watt C. 20 watt D. 60 watt

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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 conductivity of a superconductor is

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

Electron volt is the unit of

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

The thermistors are usually made of

The resistance of the given conductor can be increased by

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

One joule is equal to

The ohm's is defined as

The potential difference across each resistance in series combination is

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

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

The electric field due to an infinite long thin wire at a distance R varies as

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

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

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

Potentiometer is more sensitive than voltmeter, because

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

The SI unit of capacitance is

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

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

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

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

Electron volt is the unit of.

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

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

The relation between charge 'Q' and current 'I' is given by

The nature of capacity of electrostatic capacitor depends on

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

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ECAT Physics Chapter 12 Important MCQ's

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