Explore topic-wise MCQs in Electrical Engineering.

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

The reciprocal of resistivity is________

A. Conductance
B. Resistance
C. Conductivity
D. Impedance
Answer» D. Impedance
Discussion
2.

Which of the following statements are true with regard to resistivity?

A. Resistance depends on the temperature
B. Resistance does not depend on the temperature
C. Resistivity depend on the length
D. Resistivity depend on area of cross section
Answer» B. Resistance does not depend on the temperature
Discussion
3.

Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively.

A. 5:7
B. 2:7
C. 2:5
D. 7:5
Answer» D. 7:5
Discussion
4.

A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m.

A. 16 ohm-metre
B. 8 ohm-metre
C. 16 kiloohm-metre
D. 8 kiloohm-metre
Answer» C. 16 kiloohm-metre
Discussion
5.

Materials which easily allow the passage of electric current are known as ______

A. Insulators
B. Conductors
C. Dielectrics
D. Semi-conductors
Answer» C. Dielectrics
Discussion
6.

WHICH_OF_THE_FOLLOWING_STATEMENTS_ARE_TRUE_WITH_REGARD_TO_RESISTIVITY??$

A. Resistance depends on the temperature
B. Resistance does not depend on the temperature
C. Resistance does not depend on the length
D. All the statements are false
Answer» B. Resistance does not depend on the temperature
Discussion
7.

The_reciprocal_of_resistivity_is________$

A. Conductance
B. Resistance
C. Conductivity
D. Impedance
Answer» D. Impedance
Discussion
8.

Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively?

A. 5:7
B. 2:7
C. 2:5
D. 7:5
Answer» D. 7:5
Discussion
9.

What is the resistivity of Copper?

A. 1.59*10<sup>-8</sup>ohm<sup>-m</sup>
B. 2.7*10<sup>-8</sup>ohm<sup>-m</sup>
C. 7.3*10<sup>-8</sup>ohm<sup>-m</sup>
D. 5.35*10<sup>-8</sup>ohm<sup>-m</sup>
Answer» B. 2.7*10<sup>-8</sup>ohm<sup>-m</sup>
Discussion
10.

Which, among the following is a unit for resistivity?

A. ohm/metre
B. ohm/metre<sup>2</sup>
C. ohm-metre
D. ohm-metre<sup>2</sup>
Answer» D. ohm-metre<sup>2</sup>
Discussion
11.

Which of the following statements are true with regard to resistance?

A. Resistance is directly proportional to a length of the wire
B. Resistance is directly proportional to an area of cross section of the wire
C. Resistance is inversely proportional to the length of the wire
D. All the statements are false
Answer» C. Resistance is inversely proportional to the length of the wire
Discussion
12.

A wire having an area of cross section = 10sqm and another wire having an area of cross section= 15sqm, have the same length and are made up of the same material. Which wire has more resistance?

A. Both have equal resistance
B. The 10sqm wire has higher resistance
C. The 15sqm wire has higher resistance
D. The value of resistance cannot be determined from the given data
Answer» C. The 15sqm wire has higher resistance
Discussion
13.

A wire of length 2m and another wire of length 5m are made up of the same material and have the same area of cross section, which wire has higher resistance?

A. Both have equal resistance
B. The 2m wire has higher resistance
C. The 5m wire has higher resistance
D. The value of resistance cannot be determined from the given data
Answer» D. The value of resistance cannot be determined from the given data
Discussion
14.

Materials which allow the passage of electric current are known as ______

A. Insulators
B. Conductors
C. Dielectrics
D. Semi-conductors
Answer» C. Dielectrics
Discussion