ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
2	A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?	A. 108 g B. 10.8 g C. 0.8 g D. 108/0.8 g
3	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. power B. current C. resistance D. temperature
4	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	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
5	A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to	A. -q B. +q C. -2q D. +4q
6	The ohm's is defined as	A. 1 ampere / 1 volts B. 1 coulomb / 1 volt C. 1 volt / 1 ampere D. 1 volt / 1 coulomb
7	Resistance of a conductor depends upon	A. the quantity of current passing through it B. the voltage applied between its end C. its dimensions, physical state and nature of its material D. all of the above
8	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above
9	If we increase the distance between two plates of the capacitor, the capacitance will	A. Increase B. Decrease C. Remain same D. First increase then decrease
10	A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is	A. 8 J B. 16 J C. 4 x 10^-3J D. 2 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

The electric flux from a closed surface

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

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

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

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

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

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

If the two charges in Coulomb's law have double distance between them, then electric force

Electric generators which convert mechanical energy into

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

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

Resistance of a conductor depends upon

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

The capacitance of a parallel plate capacitor depends upon

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

At ordinary temperature, an increase in temperature increases the conductivity of

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The relation between charge 'Q' and current 'I' is given by

If the length of the conductor is double and its cross sectional area is halved, its conductance will

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

Thermocouple is an arrangement of two different metals

Electron volt is the unit of.

The capacity of a parallel plat capacitor depends on the

The earth's potential is taken as

The ohm's is defined as

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

The current through a metallic conductor is due to the motion of

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

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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