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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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
2	The resistance of an incandescent lamp is	A. Smaller when switched on B. Greater when switched off C. The same whether it is switch off or switch on D. Greater when switched on
3	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
4	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
5	If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be	A. 5μF B. 20μF C. 10μF D. 15μF
6	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
7	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
8	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. 3/5 ohm B. 2 ohm C. 6/5 ohm D. 3 ohm
9	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above
10	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature

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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

Physicist George Simon ohm was a

The charge carriers in gases are

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Electron volt is the unit of.

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

Thermocouple is an arrangement of two different metals

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

Free electrons are

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

The unit of conductance is

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

The capacity of a parallel plat capacitor depends on the

Coulomb force, when any material medium is placed between two charges

In a voltmeter the conduction takes place due to

Specific resistance of a wire depends upon

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

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

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

Surface density of charge is defined as

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

The conductivity of a superconductor is

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

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

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

Electron volt is the unit of

Ohm established a relation between

The nature of capacity of electrostatic capacitor depends on

The electric field will be uniform

Which of the following does not obey ohm's law?

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ECAT Physics Chapter 12 Important MCQ's

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