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	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
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	Battery is charged in motor cars, which is based on	A. Chemical effect B. Magnetic effect C. Electric effect D. None
4	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
5	The electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
6		A. 5μF B. 10μF C. 3μF D. 6μF
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 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
9	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. 1/3 V B. 2/3 V C. 3/2 V D. 3V
10	Consider a spherical shell of metal at he centre of which a positive point charge is kept	A. The electric filed is zero outside the shell B. The electric field is zero everywhere C. The electric field is zero in the region inside the shell D. The electric field is non-zero in both regions outside and inside the shell

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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 ohm's is defined as

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

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

Equal charges are given to two spheres of different radii. The potential will

One coulomb of charge is created by

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

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

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

Surface density of charge is defined as

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

The energy stored in a charge capacitor

Physicist George Simon ohm was a

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

The resistance of the given conductor can be increased by

Electric generators which convert mechanical energy into

The SI unit of capacitance is

Electric flux is defined by the relation

Resistance of a conductor depends upon

One coulomb per second is equal to

The unit of conductance is

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

Specific resistance of a wire depends upon

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

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

The electric field due to an infinite long thin wire at a distance R varies as

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

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

One electron volt is equal to

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ECAT Physics Chapter 12 Important MCQ's

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The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

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

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then