Electricity Questions. Please Help?

1. What is having too many amps in a circuit called? (starts with an O)
2. What is something that allows electricity to flow easier?
3. What is a drop in voltage due to great distance electricity travels along a wire (2 words)
4. Has the same current throughout?
5. Has same voltage in each branch?
6. How would you place a negative charge on an electroscope?
7. What happens at the zinc and copper terminals of a wet cell?
If you could answer any of these, that would be FANTASTIC!
Thanks!