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Figure 10 show two circuits in which identical dry cells and identical bulbs are used.

a). Explain why the bulb in Figure 10 (b) will be brighter than each of the bulbs in Figure 10 (a).
b).Give the reason why the cells in Figure 10(b) can be used for a longer period than the cells in Figure 10 (a).

Answer Text:
a).The bulb in 10(a) offers higher resistance which results to low current flow.
b).The current drawn from each cell in 10(b) is less than that in 10(a).