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	Some charge is being given to a conductor. Then its potential	A. Is maximum at surface B. Is maximum at centre C. Is remain same throughout the conductor D. Is maximum somewhere between surface and centre
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	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
4	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
5	The capacity of a parallel plat capacitor depends on the	A. Type to metal used B. Thickness of plates C. Potential applied across the plates D. Separation between the plates
6	An electric charge at rest is	A. Only an electric field B. Only a magnetic field C. Both electric and magnetic fields D. None of the above
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	The SI unit of capacitance is	A. Farad B. Henry C. Ohm D. Volt
9	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
10	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

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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 electric intensity outside the two oppositely charged parallel metal plates is

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

The unit of conductance is

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

One electron volt is equal to

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

Physicist George Simon ohm was a

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The fractional change in resistance per kelvin is known as

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

The nature of capacity of electrostatic capacitor depends on

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

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

The charge carriers in electrolyte are positive and negative

Electric flux is defined by the relation

The graphical representation of ohm's law is

Coulomb's force between two point charges depends upon

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

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

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

In bringing an electron towards another electron, electrostatic potential energy of system

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

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

In a voltmeter the conduction takes place due to

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

Capacitance of two or more capacitors

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

The SI unit of electric field intensity is

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

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