CBSE Class 10 Answered
The following table gives the resistivity of three samples:
Asked by Gurleen Kaur | 18 Jun, 2011, 08:56: PM
Expert Answer
As we know that
where H is heat ,I is the current ,R is the resistance and t is the time.
and from the equation we know that heat is directly proportional to resistance .
Therefore sample C will be suitable for heating elements of electrical appliances as sample C has high Resistivity in comparision with other two sample.
Answered by | 19 Jun, 2011, 02:14: AM
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