The Primary of a 3:1 Step-Up Transformer Is Connected to a Source

Multiple Choice

The primary of a 3:1 step-up transformer is connected to a source and the secondary is connected to a resistor R.The power dissipated by R in this situation is P.If R is connected directly to the source it will dissipate a power of:

A) P/9
B) P/3
C) P
D) 3P
E) 9P