Question

The poorest in electrical conductivity among the following metals is 
1. Silver
2. Copper
3. Gold
4. Aluminium

Answer 1

Correct Answer - Option 4 : Aluminium

CONCEPT:

• Electrical Conductivity: It is a property of a material that shows the ability of a material to carry current.
  • It is the opposite of electrical resistivity.
• The below table shows the electrical conductivity of different materials:

Position	Metal	Conductivity S/m × 106
1.	Silver	6289
2.	Copper	5977
3.	Gold	4255
4.	Aluminum	3766
5.	Iron	1029

EXPLANATION:

• From the given options, Silver has the highest electrical conductivity, and Aluminum has the least.
• On a scale of 0 to 100 for electrical conductivity, silver ranks 100, with copper at 97 and gold at 76, aluminum at 60.
• Hence the correct answer is option 4.