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	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
2	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰
3	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
4	At ordinary temperature, an increase in temperature increases the conductivity of	A. Conductor B. Semiconductor C. Insulator D. Alloy
5	The SI unit of conductivity is	A. ohm-m B. ohm^-1m^-1 C. ohm-m^-1 D. ohm^-1m
6	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
7	A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
8		A. 5μF B. 10μF C. 3μF D. 6μF
9	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
10	A condenser of capacity 50μF is charged to 10 V.The energy stored is	A. 1.25 x 10^-3J B. 3.75 x 10^-3J C. 2.5 x 10^-3J D. 5 x 10^-3J

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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

Which of the following represents an electric current?

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

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

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

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

Coulomb's force between two point charges depends upon

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

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

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 field will be uniform

The unit of resistance is

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

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Electron volt is the unit of.

The relation V = IR represents

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

The electric lines of force are

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

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance 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

Electric potential of earth is taken to be zero because the earth is good

Which of the following does not obey ohm's law?

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

The charge carriers in electrolyte are positive and negative

The ohm's is defined as

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

Solar cell converts sunlight directly into

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

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

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ECAT Physics Chapter 12 Important MCQ's

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An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

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

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

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