Suppose you want to build a transformer that will convert 80 V power coming from the primary coil to 128 V pow

Question

Suppose you want to build a transformer that will convert 80 V power coming from the primary coil to 128 V power going out of a secondary coil. If you want to have a total of 20 turns, how many turns should you have in the primary coil? (Hint: use your formula sheet) (1 point) 16 8 12 4

GPT-5 mini · Answer

Use the turns ratio Vs/Vp = Ns/Np. Since Vs/Vp = 128/80 = 1.6, Ns = 1.6 Np. With Np + Ns = 20 → Np + 1.6 Np = 20 → 2.6 Np = 20 → Np = 20/2.6 ≈ 7.69 ≈ 8.  
Answer: 8

Suppose you want to build a transformer that will convert 80 V power coming from the primary coil to 128 V power going out of a secondary coil. If you want to have a total of 20 turns, how many turns should you have in the primary coil? (Hint: use your formula sheet) (1 point) 16 8 12 4

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