Question: The cylindrical drum of a copy machine is 30cm long with 5.0cm radius. If charge is uniformly distributed over the cylindrical surface (the top and bottom flat circular ends of the drum have no charge) and the electric field very close to this surface midway along the length of the drum is 2.0 x 105 N/C,
Part A: What is the total charge on the cylinder?
Please help for the above question, completely confused!! Show each steps if possible, Thanks.