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Question

A transformer steps down \( 440 \, \text{V} \) to \( 220 \, \text{V} \). If the secondary current is \(
8 \, \text{A} \), what is the primary current?

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Explanation

**Transformer** works on mutual induction, V_s/V_p = N_s/N_p, I_s/I_p = N_p/N_s for ideal (power conserved V_p I_p = V_s I_s), step-up N_s>N_p V_s>V_p I_s

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