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When the temperature of a metallic condu...

When the temperature of a metallic conductor is increased, its resistance

A

always decreases

B

always increases

C

may increases or decreases

D

remains constant

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A: When temperature of a metallic wire is increased, its resistance increase . R : As the temperature is increaed , average relaxtion time increase.

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark
    B
    If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark.
    C
    If Assertion is ture statement but Reason is false , then mark
    D
    If both Assertion and Reason are false statements then mark.

  • Assertion : When temperature of a conductor is increased, its resistance increases. Reason : Free electrons collide more frequently.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • When the temperature of semiconductor is increased, its electrical conductivity

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    increases
    B
    remains the same
    C
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    As the temperature of a metal conductors increase the frequency of collision of electrons …….. and time of relation of the electrons……

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