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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Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120
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Furqan Asif 26 - Mar - 2026 36 Min 02 Sec 72/120
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usman gujjar 02 - Dec - 2024 07 Min 03 Sec 70/120
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Taha 18 - Mar - 2026 17 Min 17 Sec 68/120
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hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120
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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 electrode connected with the positive terminal of the current source is called	A. cathode B. anode C. electrolyte D. position
2	A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance	A. Increase k time B. Decreases k times C. Decreases 1/K times D. Remains unchanged
3	Electric potential of earth is taken to be zero because the earth is good	A. Semiconductor B. Conductor C. Insulator D. Dielectric
4	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
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	Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become	A. -10 N B. +10 N C. +20 N D. -20 N
7	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
8	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
9	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
10	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

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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

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

In a voltmeter the conduction takes place due to

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

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

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

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

In a charged capacitor the energy is stored in

The electric flux from a closed surface

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

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

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

Thermocouple is an arrangement of two different metals

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

The ohm's is defined as

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

The energy stored in a charge capacitor

The graphical representation of ohm's law is

Resistance of a conductor depends upon

At any point on the right bisector of the line joining two equal and opposite charges

The conductivity of a superconductor is

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

Resistance of a conductor is increased, the currant will

The unit of resistance is

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

The fractional change in resistance per kelvin is known as

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

One coulomb per second is equal to

The electric intensity outside the two oppositely charged parallel metal plates is

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

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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