A problem regarding static charge -- rubbing a metal rod with wool

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
3 replies · 3K views
sahilmm15
Messages
100
Reaction score
27
A metal rod held in hand and rubbed with wool will not show any sign of of being charged. However, if a metal rod with a wooden or plastic handle is rubbed without touching its metal part, it shows signs of charging. Why??
 
Physics news on Phys.org
Hi. Charge leaves through your hand to Earth. Wood or plastic is insulator, hands are conductor.
 
anuttarasammyak said:
Hi. Charge leaves through your hand to Earth. Wood or plastic is insulator, hands are conductor.
Just after posting the question I got the answer. But I didn't knew how to delete the thread which I created. Can you help me with this. By the way thanks for the answer.
 
anuttarasammyak said:
Hi. Charge leaves through your hand to Earth. Wood or plastic is insulator, hands are conductor.
Also : Connecting the rod to a body - or Earth will have the effect of vastly increasing the Capacitance and V=Q/C so the Potential change will be minuscule.