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 earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite
2	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
3	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
4	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
5	Thermocouple is an arrangement of two different metals	A. To convert heat energy in to electrical energy B. To produce more heat C. To convert heat energy into chemical energy D. To convert electric energy in to heat energy
6	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
7	The resistance of the given conductor can be increased by	A. Increasing the area B. Changing resistivity C. Decreasing the length D. None of the above because change does not matter because in any case the volume remains the same
8	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
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	Equal charges are given to two spheres of different radii. The potential will	A. Be more on the smaller sphere B. Be more on the bigger sphere C. Be equal on both the sphere D. Depend on the nature of the material of the sphere

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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 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

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

Heating effect caused by an electric circuit is written

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

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Resistance of a conductor is increased, the currant will

Electron volt is the unit of

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

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

Coulomb's force between two point charges depends upon

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

The charge carriers in electrolyte are positive and negative

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

In a charged capacitor the energy is stored in

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

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

The dot product of electric field intensity E and vector area A is called

The fractional change in resistance per kelvin is known as

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

One coulomb per second is equal to

The speed of randomly moving electrons depends upon

Ohm established a relation between

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

The value of electrical constant of proportionality k is

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

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

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 electric field will be uniform

The potential difference across each resistance in series combination is

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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?