Theory & DesignQuestion 91 of 110
A transformer has a 4:1 turns ratio and a 10-A primary current. What is the secondary current (ideal)?
a.10 A
b.2.5 A
c.40 A
d.20 A
Explanation
Current is inversely proportional to the turns ratio: Is = Ip x (Np/Ns) = 10 x 4 = 40 A.
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