A dozen identical light-bulbs are connected to a given emf.

(a) Will the lights be brighter if they are connected in series or in parallel?

(b) Choose the best explanation from among the following:

I. When connected in parallel each bulb experiences the maximum emf and dissipates the maximum power.

II. Resistors in series have a larger equivalent resistance and dissipate more power.

III. Resistors in parallel have a smaller equivalent resistance and dissipate less power.