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Electronics and Communication Engineering - Materials and Components - Discussion

Discussion Forum : Materials and Components - Section 3 (Q.No. 35)
Materials and Components
35.

Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C.

Reason (R): The physical properties of a material are determined mostly by the extent of impurities.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:

The increase of resistance with temperature is governed by temperature coefficient of resistance.

Discussion:
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