The correct answer is:
electrons/second
Explanation:
5A current is passing through the copper wire and the light bulb; it means that 5 Coulombs of charge per second is passing through the wire (as current = coulombs/second). To find the electrons per second, the following formula is used:
Electrons per second = 
The answer is holes in leaves that were made by insects
a clock .. and i guess a non functioning clock ?