Question

A student connects a cell, of emf E₂, and internal resistance r₂, with a cell of emf E₁, and internal resistance r₁, such that their combination has a net internal resistance less than r₁. This combination is then connected across a resistance R.

Draw a diagram o{ the 'set-up' and obtain an expression for the current flowing through the resistance.

Answer 1

Since r_eq < r₁ the two cells must have been connected in parallel .

The diagram of the setup is as shown