Question

12
What happens to the conductance of a copper wire when its
temperature is raised?
(i) What happens to the resistance of the following substances
when its temperature is raised?
(ii) Aluminium (ii) Silicon (iii) Silver (iv) Germanium​

Answer 1

Answer:

Hi!

We know , Resistance increases with Temperature.

As conductance = 1/Resistance ,

So , Conductance decreases with rise in temperature.

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Second Part of your question:-

• Resistance of Al increases with increase in temperature (ohmic resistor).

• Resistance of silicon increases with rise in temperature.

• Resistance of silver increases with increasing temperature
• Resistance of Germanium decreases with rise in temperature (another such example is Carbon).

Have a great day (◍•ᴗ•◍)

-Srijan