Thanks for your reply. But the high voltage supply will continuously apply 10kv to the needle. And there is no other connection to the needle. So no current will be generated in the needle.
I have a question about whether a conductive wire is under any electric force if placed in a electric field. The setup is as following.
A metallic needle is placed above a grounded metal plate at a distance of 100mm. the diameter of the needle is about 1mm, the length is about 20mm. The...