What happens to the other bulbs in a series circuit if one bulb blows off?

If the lamps are both the same in the figure given below and if A₁ reads 0.50 A, what do A₂, A₃, A₄ and A₅ read?

Are the lights in your house wired in series?

What happens to the other bulbs in a parallel circuit if one bulb blows off?

Which type of circuit, series of parallel, is preferred while connecting a large number of bulbs:

(a) for decorating a hotel building from outside?

(b) for lighting inside the rooms of the hotel?