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	If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy	A. Ve B. V/e C. e/V D. 2Ve
2	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
3	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
4	The electric field will be uniform	A. Near a positive point charge B. Near a negative point charge C. Between two oppositely charged parallel metal plates D. None of above
5	The relation V = IR represents	A. Ampere law B. Faraday's law C. Ohm's law D. Len's law
6	The earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite
7	A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes	A. 2R B. 4R C. 16R D. Zero
8	The ohm's is defined as	A. 1 ampere / 1 volts B. 1 coulomb / 1 volt C. 1 volt / 1 ampere D. 1 volt / 1 coulomb
9	The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of	A. negative charges B. positive charges C. protons D. electrons
10	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these

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

Ohm's law states that

One coulomb of charge is created by

The electric intensity at infinite distance from the point charge will be

The capacitance of a parallel plate capacitor depends upon

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

The ohm's is defined as

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

The electric flux from a closed surface

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

Resistance of a conductor is increased, the currant will

One coulomb per second is equal to

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

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)

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

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

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 point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Battery is charged in motor cars, which is based on

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

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

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

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Cause of heat production in a current carrying conductor is

The resistivity of a substance depends upon the

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

The potential difference across each resistance in series combination is

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

The current through a metallic conductor is due to the motion of

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ECAT Physics Chapter 12 Important MCQ's

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