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 current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
2	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
3	The thermistors are usually made of	A. Metals with low temperature coefficient of resistivity B. Metals with high temperature coefficient of resistivity C. Metal oxides with high temperature coefficient of resistivity D. Semi conducting materials having low temperature coefficient of resistivity
4	The electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
5	The capacity of a parallel plat capacitor depends on the	A. Type to metal used B. Thickness of plates C. Potential applied across the plates D. Separation between the plates
6	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
7	The charge carriers in gases are	A. electrons B. ions C. protons D. ions and electrons
8	In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes	A. Four-fold B. One-half C. One-fourth D. Zero
9	The unit of resistance is	A. volt B. ampere C. ohm D. coat
10	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area

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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 value of electrical constant of proportionality k is

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

The SI unit of conductivity is

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

The charge carriers in gases are

The electrode connected with the positive terminal of the current source is called

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

The resistance of an incandescent lamp is

The electric flux is linked with a surface will be maximum when

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

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

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

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

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Ohm is the unit of

The SI unit of current is

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

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

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Electric flux is defined by the relation

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)

Free electrons are

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

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

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

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

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

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

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

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