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	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these
2	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
3	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
4	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	A. Zero B. 10Ω C. 1Ω D. 0.10Ω
5	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
6	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
7	The capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
8	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω
9	A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is	A. 8 J B. 16 J C. 4 x 10^-3J D. 2 x 10^-3J
10	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

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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

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

A conducting wire is drawn to double its length. Final resistivity of the material will be

Ohm's law states that

Resistance of a conductor depends upon

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

The SI unit of electric field intensity is

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Solar cell converts sunlight directly into

The electric field will be uniform

106electrons are moving through a wire per second, the current developed is

The nature of capacity of electrostatic capacitor depends on

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

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

If electric and gravitational force on an electron in a uniform electric field will be

Thermocouple is an arrangement of two different metals

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

Heating effect caused by an electric circuit is written

The potential difference across each resistance in series combination is

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

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Electric flux is defined by the relation

If we increase the distance between two plates of the capacitor, the capacitance will

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

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Which of the following represents an electric current?

Surface density of charge is defined as

The unit of intensity of electric field is

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

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

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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

10⁶electrons are moving through a wire per second, the current developed is

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?