A certain cable has an insulation of relative permittivity = 4. If the insulation is replaced by one of relative permittivity = 2, the capacitance of the cable will become
1
one half
2
double
3
four times
4
none of the above
5
Question Not Attempted
A certain cable has an insulation of relative permittivity = 4. If the insulation is replaced by one of relative permittivity = 2, the capacitance of the cable will become