Transformers: the Primary Coil of a Transformer Has 100 Turns

Multiple Choice

Transformers: The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If the ac voltage applied to the primary coil is 230 V, what voltage is present in its secondary coil?

A) 920 V
B) 58 V
C) 130 V
D) 400 V
E) 100 V