# p-n-p transistor and Resistance

Electricity and Magnetism Level 2

The above is the circuit diagram of a p-n-p type transistor linked with power equipment, resistance $$R$$, and switches $$S_1, S_2$$ and $$S_3$$. Which of the following statements are correct?

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 ($$V_B$$).

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