A carbon rod may be an insulator or a conductor. It depends on which allotrope of carbon we're talking about. Electricity can travel through a graphite (carbon) rod easily, but it cannot travel through a diamond rod. Both graphite and diamond are carbon, but the former is a conductor while the latter is an insulator.
As regards electrical conduction, if the carbon rod is graphite, it's a conductor. If the carbon rod is diamond, it's an insulator. We have to specify the allotrope of carbon used to make the rod to discover whether it's an insulator or conductor.
insulator
Graphite conducts electricity.
No. Lead is a realtively good conductor. The insulator is the wood on the outside of the lead.
A carbon rod may be an insulator or a conductor. It depends on which allotrope of carbon we're talking about. Electricity can travel through a graphite (carbon) rod easily, but it cannot travel through a diamond rod. Both graphite and diamond are carbon, but the former is a conductor while the latter is an insulator.
As regards electrical conduction, if the carbon rod is graphite, it's a conductor. If the carbon rod is diamond, it's an insulator. We have to specify the allotrope of carbon used to make the rod to discover whether it's an insulator or conductor.
insulator
Graphite conducts electricity.
Graphite conducts electricity.
No. Lead is a realtively good conductor. The insulator is the wood on the outside of the lead.
Wood is a fair insulator, but graphite is a reasonably good conductor, so it depends on which part of the pencil you're measuring.
conductor
Graphite is a conductor of electricity, but its conductivity varies greatly with direction: Conduction is high along the plane of the sheets of carbon atoms found in a single crystal of graphite, but much lower perpendicular to this plane.
semi conductor
Pencil "lead" is not really lead, the metal - Pb. Pencils are made with graphite which is a mineral, an insulator.
The shell or carapce made of wood in pencil having a graphite refill in it is an insulator but as graphite is good conductor of electricity so overall a pencil can cunduct current in it.