# p-n-p transistor and Resistance

**Electricity and Magnetism**Level 2

a) If switches \(S_1\) and \(S_3\) are closed and \(S_2\) is open, then the electricity flows into resistance \(R\).

b) If switch \(S_1\) is open and \(S_2\) and \(S_3\) are closed, then the electricity flows into resistance \(R\).

c) If all \(3\) switches \(S_1, S_2\) and \(S_3\) are closed, then the electricity flowing into the collector (\(V_C\)) is larger than the electricity flowing into the base (\(V_B\)).