Assertion (A): At high temperatures, metal wires have a greater chance
of short circuiting.
Reason (R): Both resistance and resistivity of a material vary with
temperature.
CBSE BOARDS 2020 SCIENCE
Answers
Answered by
6
Answer:
both a and b are correctand r is correct explain ation of a
Answered by
2
Answer:
Yes, both the statements given are absolutely right. The metal wires have a greater chance of short circuit at high temperatures, as they have less resistance.
The resistance and resistivity both increase with the increase in temperature.
Thus:
Both (A) and (R) are true and (R) is the correct explanation of (A).
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