Understanding Diode Current Flow: A to B or No Flow?

AI Thread Summary
When a diode is connected in series with a resistor and battery, with the cathode at the positive terminal and the anode at the resistor, current does not flow because the diode is reverse biased. The consensus is that the correct answer is "no flow" (B), as the diode only allows current in the forward direction. While reverse leakage current exists, it is not considered in the provided answer choices. The discussion highlights the importance of understanding diode behavior in circuit configurations. Overall, the key takeaway is that in this setup, current flow is effectively blocked.
freshbox
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Homework Statement


What is the current flow when a diode is connected in series with a resistor and battery.The cathode of the diode indicated as A is connected to the positive battery terminal.The Anode of the diode indicated as B is connected to the one leg of the resistor and the other is connected to the negative terminal of the battery.

A) A to B

B) no flow

C) B to A

Homework Equations


NA

The Attempt at a Solution


Since the battery is connected to the Cathode of the diode, there is no current flow because diode only works in forward biased. Therefore the answer is B.
 

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Yes, ignoring reverse leakage (which IS being ignored by the possible answers) that's correct. What is your question?
 
I am not 100% sure of my answer.
 
freshbox said:
I am not 100% sure of my answer.

Why not? The Relevant Equation for this problem is the Diode Equation. Are you familiar with it? As phinds says, in reverse bias you get the small leakage current Is, but that is not one of the choices in your problem. If one of the choices was "A small current from A to B", then that would be a more correct answer than "no flow".
 
Yup, thanks for the clarification :)
 

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