A battery is made up from three similar correctly connected dry cells in series. The open-circuit e.m.f. is measured to be 4.3V. When the battery is connected to an unknown resistor the current is metered to be 0.4A and the battery terminal voltage as 4.23V. If one of the cells of the battery is reversed and the circuit made up as before, estimate the new current value.

A battery is made up from three similar correctly connected dry cells in series. The open-circuit e.m.f. is measured to be 4.3V. When the battery is connected to an unknown resistor the current is metered to be 0.4A and the battery terminal voltage as 4.23V. If one of the cells of the battery is reversed and the circuit made up as before, estimate the new current value.