Question

Calculate the resistivity of the material of conductor with length 1km and cross section of 5mm of a resistance of 10. Ohm

Answer 1

Explanation:

1km=1000000mm

so,5mm= 5/1000000

=5*10^-6km

Resistance=resistivity *length/area

20=resistivity*1/5*10^-6

20*5=resistivity*1*10^6

resistivity=100*10^-6. ohm metre

Answer 2

Answer:

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