2007-01-25 23:11:17 · 18 answers · asked by Anonymous in Science & Mathematics ➔ Physics
yeah you got the answer.
Its graphite and it conducts.
2007-01-26 13:42:06 · answer #1 · answered by Mysterious 3 · 0⤊ 0⤋
First, the lead in a pencil is not pure graphite. It is a fired mixture of clay and graphite. As for its conductivity, here is a fun experiment...but be careful! Take an empty coffe cup and stick a sharpened pencil in it with the point up. Make sure the pencil is a broken wooden one without the eraser or the metal frame that holds the eraser. Now, stick the cup in a microwave, close the door, and turn on the microwave. The light show is quite impressive...but shut it off quickly or the pencil lead will heat up enough to evaporate any liquid in the pencil and the beast will explode.
2007-01-26 04:22:05 · answer #2 · answered by Dr.T 4 · 0⤊ 0⤋
As said, it's graphite and it's a conductor though with high resistance. Automotive spark plug wires are often made of kevlar or fiberglass impregnated with graphite. The high resistance reduces electrical interference with radio, television, and other electromagnetic waves. However, as we know, a spark plug wire can deliver a shock to a human that can stun.
You'd not want to use graphite to carry low power but for high power current where high resistance is desireable, graphite works well.
Spark plug wires (fiber impregnated with graphite) carry about 50,000 to 80,000 volts at less than 1 ampere and they produce a nice blue spark at the plug electrodes.
Use those same wires to light a flashlight bulb using a 1.5 volt battery and I doubt the bulb would illuminate.
Are you planning to use the pencil to extract something from a wall outlet? Bad idea. 120 - 220 volts at 15 - 60 amps will be more than enough to overcome the high resistance of the graphite and lead a deadly shock to a human on the other end.
2007-01-25 23:27:08 · answer #3 · answered by Bob O 1 · 0⤊ 0⤋
lead in a pencil is a conductor
2007-01-26 00:33:09 · answer #4 · answered by Anonymous · 1⤊ 0⤋
yes its a conductor...as it is made out of graphite which is the only available non-metallic conductor the lead of ur pencil will conduct......
2007-01-25 23:28:56 · answer #5 · answered by shilpesh p 1 · 0⤊ 0⤋
Hi, lead pencil is a conductor because it is made up of grafite and it is a conductor.
2007-01-25 23:19:00 · answer #6 · answered by akhil 2 · 1⤊ 1⤋
it is a good conductor. AS it a graphite which means that the molecular boinding of it has a free molecule to move.
2007-01-26 04:20:45 · answer #7 · answered by mani 1 · 0⤊ 0⤋
lead in the pencil is good conductor because it has more number of free electrons in it.and electrons are the source through which electricity flow.
2007-01-26 00:51:00 · answer #8 · answered by Anonymous · 0⤊ 0⤋
lead in a penacil is actually graphite which is an allotrope of carbon.graphite is a conductor.
2007-01-26 15:14:10 · answer #9 · answered by rudro k 1 · 0⤊ 0⤋
lead in pensil is an insulator but in liquid form its is conductor
2007-01-26 00:25:09 · answer #10 · answered by sukhi 2 · 0⤊ 0⤋
PENCIL LEAD IS A CORBON PRODUCT CALLED GRAPHITE AND IT IS NEITHER A CONDUCTOR NOR A INSULATOR.IT IS A GOOD RESISTANT.
2007-01-26 00:19:53 · answer #11 · answered by S.S.KUMAR 3 · 0⤊ 0⤋