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 electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V
2	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	A. 1/3 V B. 2/3 V C. 3/2 V D. 3V
3	The graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
4	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
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	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	A. 5 volt B. 3 volt C. 15 volt D. 9 volt
7	The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of	A. negative charges B. positive charges C. protons D. electrons
8	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
9	The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as	A. voltmeters B. resistance C. electrode D. current
10	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6

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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

The SI unit of conductivity is

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

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

One coulomb of charge is created by

The SI unit of electric field intensity is

The speed of randomly moving electrons depends upon

Potentiometer is more sensitive than voltmeter, because

An electric charge at rest is

The fractional change in resistance per kelvin is known as

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

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

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

The thermistors are usually made of

The concept of field theory was put forward by

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

The capacity of a parallel plat capacitor depends on the

Electric flux is defined by the relation

The nature of capacity of electrostatic capacitor depends on

Ohm is the unit of

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

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

The unit of resistance is

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Coulomb's force between two point charges depends upon

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

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

The potential difference across each resistance in series combination 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

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

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