Additional practice

A group is considering the following circuit. Three resistors are connected as shown in a circuit with a 12 volt battery. The resistances are: 1

2 V Rc is of unknown value (larger than 0)

A. Andy thinks RA has the most current going through it. A. J. says that it is impossible to determine unless the value of Rc is known. Who do you agree with? Explain your reasoning

B. Rank the resistors based on the potential difference across them, from largest to smallest. Justify your choices.

C. If Rc is increased, what happens to the currents through the different elements of the circuit?

i. The current through the battery

ii. The current through RA.