Question

Resistivity of some materials are given. Observe the table and answer the questions

Material Ρ(Ω-m) at 200C

Copper 1.68 x 10-8

Nichrome 1.10 x 10-6

Silicon 6.40 x 102

Germanium 4.60 x 10-1

a) Name the material which is used to make the heating elements of irons,

toasters?

b) Name the materials which are used to make diodes, transistors and

integrated circuits?​

Answer 1

Answer:

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