The Primary Coil of an Ideal Transformer Has 100 Turns $120 \mathrm {~V}$

question 99

Multiple Choice

The primary coil of an ideal transformer has 100 turns and its secondary coil has 400 turns. If the ac voltage applied to the primary coil is $120 \mathrm {~V}$ , what voltage is present in its secondary coil?

• A) \(400 \mathrm {~V}\)
• B) \(30 \mathrm {~V}\)
• C) \(100 \mathrm {~V}\)
• D) \(480 \mathrm {~V}\)
• E) \(70 \mathrm {~V}\)

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