1) Consider the first circuit that you built consisting of a diode and a resisto
ID: 1379972 • Letter: 1
Question
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? (10 points) 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? (10 points) 3) Give one reason why it is better for our wall sockets to use AC voltage rather than DC. (10 points)Explanation / Answer
1) When the input voltage is positive, the diode is in forward bias. In this state it has very less resistance. So the large current flows through circuit. Hence there is some potential difference across the resistor. Which is shown as resistor voltage.
2) When the input voltage is negative, the diode is in reverse bias. In this state it has very large resistance. So the very small current flows through circuit. Hence there is almost zero potential difference across the resistor. Which is shown as resistor voltage being zero.
3)
AC can be transferred over large distances with less loss compared to DC.
AC can be stepped up and down ( increase and decrease of voltage ) while this is not possible with DC.
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