Descending order of line conductor materials in terms of electrical conductivities

Q.  The following materials of line conductor are given.

i. Hard drawn copper.
ii. Cadmium copper.
iii. Aluminium.
iv. Galvanised steel.

What is the correct series in descending order of their electrical conductivities?
- Published on 23 Nov 15

a. a. i, ii, iv, iii.
b. B. ii, i, iv, iii.
c. C. ii, i, iii, iv.
d. D. i, ii, iii, iv.

ANSWER: D. i, ii, iii, iv.

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