Physics

Problem

Two ideal transformers are connected in cascade. The first raises the voltage from

220\,\text{V}

1100\,\text{V}

. The second, connected to the

1100\,\text{V}

line, lowers it to

110\,\text{V}

for a device that draws

2\,\text{A}

. The current taken from the original

220\,\text{V}

mains is a)

0.2\,\text{A}

1\,\text{A}

4\,\text{A}

0.4\,\text{A}