A battery with emf ε and no internal resistance supplies current to the circuit shown in Figure P27. ... When the switch S is open the current in the circuit is I0. When the switch is closed in position a the current in the battery is Ia. When the switch is closed in position b, the current in the battery is Ib. Find the resistances (a) R 1 , (b) R 2 , and (c) R 3 .
