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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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 minimum charge on any object can not be less than	A. 1.6 x 10^-19C B. 3.2 x 10^-19C C. 1.0 C D. 4.8 x 10^-19C
2	Ohm's law states that	A. The current through a resistor is directly proportional to the applied voltage B. The voltage across a resistor is directly proportional to the current passing through it C. Resistance is the constant of proportionality between the voltage and current D. all of these
3	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰
4	If a 40 watt light bulb burns for 2 hours. how much heat is generated	A. 288 x 10³J B. 288 x 10⁸J C. 288 x 10⁵J D. 288 x 10⁶J
5	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
6	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	A. negative charges B. positive charges C. protons D. electrons
7	Coulomb's force between two point charges depends upon	A. Magnitude of charges B. Distance between them C. Medium in which they are located D. All of the above
8	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
9	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
10	The liquid which conduct current is known as	A. heating effect B. chemical energy C. electrolyte D. ohm'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

The charge carriers in electrolyte are positive and negative

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

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

Magnetic effect at a point caused due to flow a current depend upon the

Electric flux is defined by the relation

The concept of field theory was put forward by

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

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

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

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

Resistor is a device which convert electric energy to

Resistance of a conductor depends upon

The conductivity of a superconductor is

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

The capacity of a parallel plat capacitor depends on the

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

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

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

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

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

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

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

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

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

Surface density of charge is defined as

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

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

A condenser of capacity 50μF is charged to 10 V.The energy stored is

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

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ECAT Physics Chapter 12 Important MCQ's

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Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

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

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is