Basic Electrical MCQ #18

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

      (a) Power

      (b) Current

      (c) Voltage

      (d) Flux density

2) The direction of flow of conventional current is always ______.

      (a) Same as compared to that of the electron current

      (b) Undefined

      (c) Opposite to that of the electron current

      (d) Both A and B

3) The force between like charge _____ and unlike charge ______.

      (a) Repulsive, Attractive

      (b) Attractive, Attractive

      (c) Repulsive, Repulsive

      (d) Attractive, Repulsive

4) The conventional current always flow from ______ potential?

      (a) Negative to Positive

      (b) Positive to Negative

      (c) Negative to Negative

      (d) Positive to Positive

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

5) The electron and proton contain _______and _______ charge?

      (a) Negative, Positive

      (b) Positive, Positive

      (c) Negative, Negative

      (d) Positive, Negative

6) The property of material to oppose the flow of current is called _____

      (a) Conductance

      (b) Inductance

      (c) Impedance

      (d) Resistance

7) If the length of the conducting material is increases, then _____

      (a) Resistance of the material increases

      (b) Resistance of the material remains same

      (c) Resistance of the material is decreases

      (d) None of the above

8) The unit of resistivity is _____.

      (a) Ohm-ohm

      (b) Ohm-meter

      (c) Meter-ohm

      (d) Ohm per meter

ANSWER:  | 5-a | 6-d | 7-a | 8-b |

9) A material is classified on the basis of electrical property.

      (a) Conductors

      (b) Insulators

      (c) Semiconductors

      (d) All of the above

10) The length of conductor is doubled and its area remains same then its resistance will be _____

      (a) Remains same

      (b) Increased by 4 time

      (c) Doubled

      (d) None of the above

11) The current density is the ratio of____?

      (a) Current per unit area

      (b) Current per unit resistance

      (c) Area per unit current

      (d) All of the above

12) A 1 ampere is equal to ______emu of current?

      (a) 1/40 emu of current

      (b) 1/20 emu of current

      (c) 1/30 emu of current

      (d) 1/10 emu of current

ANSWER: | 9-d | 10-c | 11-a | 12-d |