An alternating (a.c.) supply is connected to a diode and a resistor in series. Which graph shows how the potential difference V across the resistor varies with time t?
Understand the Problem
The question is asking which graph correctly represents the potential difference across a resistor connected in series with a diode and an alternating current (a.c.) supply over time. The key concepts involve understanding how a diode affects the voltage across a resistor when driven by an a.c. source, particularly how it rectifies the current.
Answer
Graph A
The final answer is A.
Answer for screen readers
The final answer is A.
More Information
The diode only allows positive or negative halves of the AC waveform to pass, creating a half-wave rectified output.
Tips
A common mistake is to forget that the diode blocks half of the AC cycle, leading to a zero potential for the blocked half.
Sources
AI-generated content may contain errors. Please verify critical information
