The Primary Coil of a Transformer Has 100 Turns and Its

Multiple Choice

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 120 V,what voltage is present in its secondary coil?

A) 100 V
B) 30 V
C) 70 V
D) 480 V
E) 400 V