In parallel: voltage across each = 6V

(a) Current through each:

I₁ = 6/5 = 1.2 A I₂ = 6/10 = 0.6 A I₃ = 6/30 = 0.2 A

(b) Total current:

I = 1.2 + 0.6 + 0.2 = 2 A

(c) Effective resistance:

R_eff = 6/2 = 3