24-01-2015, 09:57 AM
13-10-2017, 02:47 PM
The internal resistance is defined as the resistance that the electrolyte of the cell offers to the ion flow. Your S.I. is Ohm (Ω) for a cell of e.m.f. (E) and internal resistance ®, connected to an external resistor ® such that (I) is the current flowing through the circuit, E = V + Ir Internal resistance r = E-V O I.
Internal resistance of a cell: the opposition that the electrolyte of the cell offers to the flow of electric current through it is called the internal resistance of the cell.
Factors that affect the internal resistance of a cell:
i) Larger separation between the electrodes of the cell, plus the length of the electrolyte through which the current must flow and, consequently, a higher internal resistance value
ii) The higher the conductivity of the electrolyte, the lower the internal resistance of the cell. that is, the internal resistance depends on the nature of the electrolyte.
iii) The internal resistance of a cell is inversely proportional to the common area of the electrodes that are immersed in the electrolyte.
(iv) The internal resistance of a cell depends on the nature of the electrodes. IR = V + v = IR + Ir = I (R + r) I = E / (R + r) This relation is called circuit equation. V
Internal resistance of a cell: the opposition that the electrolyte of the cell offers to the flow of electric current through it is called the internal resistance of the cell.
Factors that affect the internal resistance of a cell:
i) Larger separation between the electrodes of the cell, plus the length of the electrolyte through which the current must flow and, consequently, a higher internal resistance value
ii) The higher the conductivity of the electrolyte, the lower the internal resistance of the cell. that is, the internal resistance depends on the nature of the electrolyte.
iii) The internal resistance of a cell is inversely proportional to the common area of the electrodes that are immersed in the electrolyte.
(iv) The internal resistance of a cell depends on the nature of the electrodes. IR = V + v = IR + Ir = I (R + r) I = E / (R + r) This relation is called circuit equation. V