ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120
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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 current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
2	Specific resistance of a wire depends upon	A. Length B. Cross-section area C. Mass D. None
3	One electron volt is equal to	A. 1.6 x 1019eV B. 6.25 x 1018 eV C. 1.6 x 1018 eV D. 6.25 x 1019eV
4	Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is	A. 11.0 ohm B. 1.0 ohm C. 7.0 ohm D. 3.0 ohm
5	The concept of field theory was put forward by	A. Franklin B. Kepler C. Oersted D. Michael Faraday
6	The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is	A. 10Ω B. 20Ω C. 30Ω D. 40Ω
7	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
8	Potentiometer is more sensitive than voltmeter, because	A. Voltmeter has a very high resistance B. Voltmeter has a very low resistance C. Potentiometer does not draw any current from a source of unknown potential difference D. Potentiometer is sensitive
9	The speed of randomly moving electrons depends upon	A. pressure B. volume C. temperature D. mass
10	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre

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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

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

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

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

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

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

The speed of randomly moving electrons depends upon

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

The SI unit of electric flux is

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

The electric lines of force are

The charge per unit time through any cross-section of a conductor is called

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

In a charged capacitor the energy is stored in

Potentiometer is more sensitive than voltmeter, because

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)

An electric charge at rest is

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

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

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

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

The SI unit of conductivity is

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

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

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

Electric generators which convert mechanical energy into

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

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

Electric flux is defined by the relation

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

The charge carriers in electrolyte are positive and negative

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ECAT Physics Chapter 12 Important MCQ's

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What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

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