What is the primary current in this problem?

Question

A transformer consists of a 500 turn primary coil and a 2,000 turn secondary coil. If the current in the secondary is 3.00 A, what is the primary current?

Answer 1

12A

Answer 2

with a transformer, when a coil has the lower number of turns, it carries the higer amount of current.

the ratio of the secondary current to the primary current is equal to the inverse of the turns ratio (secondary # of turns/ primary # of turns)

Ip= primary current

Is= secondary current

#p= primary # of turns

#s= secondary # of turns

Ip/Is=#s/#p

Ip/3=2000/500

Ip/3=4

Ip=12

the primary current = 12 A