. A step down transformer connected to an ac mains supply of \(220 \mathrm{~V}\) is made to operate at \(11 \mathrm{~V}, 44 \mathrm{~W}\) lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
A \(0.2 \mathrm{~A}\)
B \(0.4 \mathrm{~A}\)
C \(2 \mathrm{~A}\)
D \(4 \mathrm{~A}\)