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If Np / Ns = Ep / Es = 1 / 25, calculate the secondary current Is when Es = 25 Ep and Ip = 50 A.

1. 2 A
2. 1 A
3. 0.5 A
4. None of the above

Correct answer: 2 A

Solution

The transformer equation states that power is conserved: Ip * Ep = Is * Es. Substituting the given values, 50 * Ep = Is * 25 * Ep. Simplifying, Is = 50 / 25 = 2 A.

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