the resistivity of iron is 1*10-7 ohm-m the resistance of a iron wire of particular length and thickness is 1 - Science - Electricity

Question

the resistivity of iron is 1*10-7 ohm-m the resistance
of a iron wire of particular length and thickness is 1 ohm if the
length and the diameter of wire both are doubled,then the
resistivity in ohm-m will be (explain)
a)1*10-7
b)2*10-7
c)4*10-7
d)8*10-7

Kiruthika · Accepted Answer

Dear student,
The resistivity is property of material and is independent of
physical dimension of the material Hence the resistivity is
1*10-7 ohm m
Regards

the resistivity of iron is 1*10-7 ohm-m.the resistance of a iron wire of particular length and thickness is 1 ohm.if the length and the diameter of wire both are doubled,then the resistivity in ohm-m will be (explain) a)1*10-7 b)2*10-7 c)4*10-7 d)8*10-7

the resistivity of iron is 110^-7 ohm-m.the resistance of a iron wire of particular length and thickness is 1 ohm.if the length and the diameter of wire both are doubled,then the resistivity in ohm-m will be (explain)
a)110^-7
b)210^-7
c)410^-7
d)8*10^-7