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 SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
2	A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)	A. 2 B. 1 C. 0.5 D. 1.5
3	A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?	A. 108 g B. 10.8 g C. 0.8 g D. 108/0.8 g
4	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
5	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
6	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
7	Coulomb's force between two point charges depends upon	A. Magnitude of charges B. Distance between them C. Medium in which they are located D. All of the above
8	Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved	A. 1.92 N B. 19.2 N C. 12 N D. 0.192 N
9	The nature of capacity of electrostatic capacitor depends on	A. Shape B. Size C. Thickness of plates D. Area
10	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	A. 1840 KeV B. 1/1840 KeV C. 1 KeV D. 920 KeV

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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 electric intensity at infinite distance from the point charge will be

One electron volt is equal to

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

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

Thermocouple is an arrangement of two different metals

Equal charges are given to two spheres of different radii. The potential will

Resistor is a device which convert electric energy to

Coulomb force, when any material medium is placed between two charges

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

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

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

The unit of resistance is

The capacitance of a parallel plate capacitor depends upon

106electrons are moving through a wire per second, the current developed is

Solar cell converts sunlight directly into

Physicist George Simon ohm was a

The relation V = IR represents

The speed of randomly moving electrons depends upon

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

Which of the following represents an electric current?

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

The graphical representation of ohm's law 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

The current through a metallic conductor is due to the motion of

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

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

Surface density of charge is defined as

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ECAT Physics Chapter 12 Important MCQ's

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10⁶electrons are moving through a wire per second, the current developed is

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is