Material resistivity quantifies its opposition to electric current flow. To address this, we compare the resistivities of Copper (A), Platinum (B), Silver (C), and Aluminium (D). The correct sequence, indicated by (C), (A), (D), (B), represents the increasing order of resistivity: Silver, Copper, Aluminium, Platinum. This order is justified as follows:
- Silver (C) exhibits the lowest resistivity, signifying superior conductivity among the given choices.
- Copper (A) possesses a slightly higher resistivity than Silver, yet remains an excellent conductor frequently employed in electrical wiring.
- Aluminium (D) has a greater resistivity than Silver and Copper. Despite this, its lower density and cost make it suitable for power lines.
- Platinum (B) demonstrates the highest resistivity within this group. Its high resistivity and expense limit its use in standard wiring, but its stability and resistance to corrosion make it valuable for specialized applications.
Therefore, the sequence (C), (A), (D), (B) accurately reflects the ascending order of resistivity.