1) Consider the first circuit that you built consisting of a diode and a resistor. When you look at the voltage across the resistor, why does the resistor voltage swing upward as the input voltage swings positive?
2) Consider the circuit in the previous question. When you look at the voltage across the resistor, why is does the resistor voltage stay at zero as the input voltage swings negative?
3) Give one reason why it is better for our wall sockets to use AC voltage rather than DC.