Two groups of cells, each group containing 4 cells in series, are connected in parallel.  Each cell has emf 1.50 V and internal resistance r of 0.075 Ω.  The external resistance of the circuit is 2.35 Ω.  Determine the current I in the 2.35 Ω resistance.

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.