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	One coulomb per second is equal to	A. One volt B. One ampere C. One hom D. One henry
2	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
3	What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?	A. 10^-1A B. 10^-2A C. 10^-4A D. 1 mA
4	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
5	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
6	The unit of resistivity is	A. ohm B. ohm-m² C. ohm-meter D. ohm-m^-1
7	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	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
8	Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be	A. 0.52 A B. 1 mA C. 0.7 mA D. 1.4 A
9	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
10	Which one of the following has larger value of relative permitivity E_rat room temperature?	A. Vaccum B. Air C. Glass D. Water

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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

Ohm established a relation between

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

The SI unit of current is

The fractional change in resistance per kelvin is known as

Electric flux is defined by the relation

Which one of the following has larger value of relative permitivity Erat room temperature?

Thermocouple is an arrangement of two different metals

Capacitance of two or more capacitors

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

One coulomb of charge is created by

Potentiometer is more sensitive than voltmeter, because

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

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

If a 40 watt light bulb burns for 2 hours. how much heat is generated

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

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

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

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

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Resistance of a conductor is increased, the currant will

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

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

Free electrons are

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

The resistance of a conductor does not depend on its

The SI unit of electric flux is

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

The potential difference across each resistance in series combination is

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

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ECAT Physics Chapter 12 Important MCQ's

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Which one of the following has larger value of relative permitivity E_rat room temperature?

An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is