The Resistance of the Primary Coil of a Well-Designed, 1:10 $\Omega$

Multiple Choice

The resistance of the primary coil of a well-designed, 1:10 step-down transformer is 1 $\Omega$ .With the secondary circuit open, the primary is connected to a 12 V ac generator.The primary current is:

A) essentially zero
B) about 12 A
C) about 120 A
D) depends on the actual number of turns in the primary coil
E) depends on the core material