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	A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is	A. Charge Q B. Potential V C. Capacity D. Energy U
2	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. Coulomb's law B. Gauss's law C. Biot-Sarwat law D. Ampere's law
3	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
4	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	A. They have the same potential B. They have the same amount of charge C. They have the same capacity D. They have the same shape
5	Consider a spherical shell of metal at he centre of which a positive point charge is kept	A. The electric filed is zero outside the shell B. The electric field is zero everywhere C. The electric field is zero in the region inside the shell D. The electric field is non-zero in both regions outside and inside the shell
6	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	A. positive temperature B. negative temperature C. absolute temperature D. zero temperature
7	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
8	The electric field will be uniform	A. Near a positive point charge B. Near a negative point charge C. Between two oppositely charged parallel metal plates D. None of above
9	The fractional change in resistance per kelvin is known as	A. temperature coefficient B. resistance coefficient C. super temperature D. critical temperature
10	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

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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

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

The charge carriers in gases are

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

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

The relation V = IR represents

If we increase the distance between two plates of the capacitor, the capacitance will

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

Electric flux is defined by the relation

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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

Ohm is the unit of

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

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

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

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

The resistance of the given conductor can be increased by

The electric flux from a closed surface

Physicist George Simon ohm was a

Potentiometer is more sensitive than voltmeter, because

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

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

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Capacitance of two or more capacitors

An electric charge at rest is

One electron volt is equal to

The unit of resistivity is

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

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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

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

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

The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately