A resistor Ra is in series with a voltage source Va. Draw
Chapter 10, Problem P10.43(choose chapter or problem)
A resistor Ra is in series with a voltage source Va. Draw the circuit. Label the voltage across the combination as v and the current asi. Draw and label the voltampere characteristic (i versus v).
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer