the following circuit shows three resistors A, B and C connected in series. the potential difference across A and B are given as Va= 2.0V and Vb=3.5V. given that the EMF of the battery is 12.0V, determine the potential difference across resistor C​

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z