what is Voltaic cell

The simple cell or voltaic cell consists of two electrodes, one of copper and the other of zinc dipped in a solution of dilute sulphuric acid in a glass vessel . On connecting the two electrodes externally, with a piece of wire, current flows A Bt Rh + + CuSO4 AgNO3 Fig 2.19 Verification of Faraday’s second law + Cu Zn Glass Dilute H SO 2 4 Vessel + + Fig 2.20 Voltaic cell 74 from copper to zinc outside the cell and from zinc to copper inside it. The copper electrode is the positive pole or copper rod of the cell and zinc is the negative pole or zinc rod of the cell. The electrolyte is dilute sulphuric acid