Basic Electrical MCQ #14

1) Inside a conductor/conducting material, the movement of electrons is known as ______

      (a) Ions

      (b) Atoms

      (c) Current

      (d) Electrons, atoms and ions

2) The rate of change of charge with respect to time is called as ______

      (a) Power

      (b) Current

      (c) Voltage

      (d) Flux density

3) The current flowing between them is ______, If the potential difference between the two points is zero.

      (a) Infinite

      (b) Zero

      (c) Not define

      (d) None of the above

4) The charge on each electron is ______ Coulomb?

      (a) 1.6x10-16

      (b) 1.9x10-19

      (c) 1.9x10-16

      (d) 1.6x10-19

ANSWER: | 1-c | 2-b | 3-b | 4-d |

5) The SI unit of electromotive force is ______

      (a) Volt

      (b) Current

      (c) Power

      (d) Ampere

6) The atoms contain of followings ______

      (a) Proton

      (b) Electron

      (c) Neutron

      (d) All of the above

7) The property of material to oppose the flow of current is called _______

      (a) Conductance

      (b) Resistance

      (c) Inductance

      (d) Impedance

8)  The resistance of material depends upon which of the following ______

      (a) Length of the material

      (b) Resistivity of the material

      (c) Area of the material

      (d) All of the above.

ANSWER: | 5-a | 6-d | 7-b | 8-d |

9) The best conductor of electricity is ______

      (a) Copper

      (b) Silver

      (c) Gold

      (d) Aluminum

10) The resistivity is also called as ______

      (a) Specific conductance

      (b) Resistance

      (c) Specific resistance

      (d) All of the above

11) The current density is the ratio of ______?

      (a) Current per unit area

      (b) Area per unit current

      (c) Current per unit resistance

      (d) All of the above

12) An electric current is a ______ quantity.

      (a) Vector

      (b) Scalar

      (c) Scalar and vector

      (d) None of the above.

13) The mass of electron is ____ kg?

      (a) 9.11x10^-19

      (b) 9.11x10^-31

      (c) 0.911x10^-31

      (d) 6.25x10¹⁸

ANSWER: | 9-b | 10-c | 11-a | 12-b | 13-b |