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	The charge per unit time through any cross-section of a conductor is called	A. capacitance B. electric power C. current D. potential difference
2	A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?	A. 108 g B. 10.8 g C. 0.8 g D. 108/0.8 g
3	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
4	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
5	Electric potential of earth is taken to be zero because the earth is good	A. Semiconductor B. Conductor C. Insulator D. Dielectric
6	The resistance of a conductor does not depend on its	A. mass B. resistivity C. length D. cross-sectional area
7	If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is	A. one ohm B. one joule C. one volt D. one ampere
8	The SI unit of capacitance is	A. Farad B. Henry C. Ohm D. Volt
9	The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is	A. 9 x 10⁵V B. 9 V C. 8 x 10⁶V D. 80 V
10	In a voltmeter the conduction takes place due to	A. Electrons only B. Holes only C. Electrons and holes D. Electrons and ions

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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 SI unit of capacitance 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

Physicist George Simon ohm was a

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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

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

Potentiometer is more sensitive than voltmeter, because

One coulomb of charge is created by

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

The resistance of a conductor does not depend on its

The charge carriers in electrolyte are positive and negative

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

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

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

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

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

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

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Which of the following represents an electric current?

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

An electric charge at rest is

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

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

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

The electric flux from a closed surface

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

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

The resistance of an incandescent lamp is

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

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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ECAT Physics Chapter 12 Important MCQ's

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

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be