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 graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
2	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	A. -10 N B. +10 N C. +20 N D. -20 N
3	The unit of resistivity is	A. ohm B. ohm-m² C. ohm-meter D. ohm-m^-1
4	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
5	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
6	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
7	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
8	A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?	A. Zero B. 5μC m^-2 C. 20μC m^-2 D. 8μC m^-2
9	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
10	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

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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

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

Solar cell converts sunlight directly into

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

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

The concept of field theory was put forward by

One joule is equal to

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

Battery is charged in motor cars, which is based on

Physicist George Simon ohm was a

The liquid which conduct current is known as

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

The value of electrical constant of proportionality k 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

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

Ohm is the unit of

Consider a spherical shell of metal at he centre of which a positive point charge is kept

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

The electric field intensity at a point due to a point charge

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

The SI unit of current is

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

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

Electric flux is defined by the relation

Which one of the following is the unit of electric field intensity

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

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 material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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

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

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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