Question

A transformer steps up an alternating current from

Answer 1

Answer:

See the answers below.

Explanation:

A transformer is a static electrical machine, it should be borne in mind that although the voltage can be increased or decreased, the power must always be equal.

For this case:

The power in the first coil can be calculated by means of the following formula.

$P=V*I$

where:

V = voltage = 12 [V]

I = current =2 [A]

a)

Therefore the power:

$P=12*2\\P=24[W]$

b)

Now in the second coil, the power must be the same:

$P_{secondcoil}=V*I\\24=144*I_{secondcoil}\\I_{secondcoil}=24/144\\I_{secondcoil}=0.166[A]$