Question

Ten identical cells each of emf e and internal resistance r

Answer 1

Answer:-

Given: Initial number of cells (n1) = 10; Potential of each cell = E; Internal resistance of each cell = r and final number of cell (n2) = 3. We know from the Ohm's law, total voltage of ten cells = 10 x E = 10 E and total resistance in ten cells = 10 x r = 10 r. Therefore current in the circuit, or potential difference across three cell (Since the voltmeter is ideal, therefore it will read 3 E).Read more on Sarthaks.com - https://www.sarthaks.com/246232/identical-cells-each-potential-internal-resistance-connected-series-form-closed-circuit