Electricity

B₁, B₂ and B₃ are three identical bulbs connected as shown in Figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A.

(i) What happens to the glow of the other two bulbs when the bulb B₁ gets fused?

(ii) What happens to the reading of A₁, A₂, A₃ and A when the bulb B₂ gets fused?

(iii) How much power is dissipated in the circuit when all the three bulbs glow together?