1.

if the length of the conductor is doubled and the area of cross section is reduced to 1/4th of its initial what will be the effect on resistance and resistivity?​

Answer» <html><body><p>New <a href="https://interviewquestions.tuteehub.com/tag/resistance-1186351" style="font-weight:bold;" target="_blank" title="Click to know more about RESISTANCE">RESISTANCE</a> is 8 times the old resistance. If the length is double then the resistance would increase by 8 times. <a href="https://interviewquestions.tuteehub.com/tag/since-644476" style="font-weight:bold;" target="_blank" title="Click to know more about SINCE">SINCE</a> R=P*L/A (Resistivity constant) length <a href="https://interviewquestions.tuteehub.com/tag/becomes-1994370" style="font-weight:bold;" target="_blank" title="Click to know more about BECOMES">BECOMES</a> 2L and area becomes 1/4th. So, <a href="https://interviewquestions.tuteehub.com/tag/almost-373246" style="font-weight:bold;" target="_blank" title="Click to know more about ALMOST">ALMOST</a> the new resistance increase by <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> times.Explanation:</p></body></html>


Discussion

No Comment Found

Related InterviewSolutions