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1. The problem statement, all variables and given/known data

Have a physics assignment to hand in. Very simple experiment - increase the voltage in a circuit and measure the current/voltage across the diode in forward and reverse. The problem comes with dealing with infinity in some of the calculations for uncertainty.

It's really only the data where the current reads as 0A I have issues with (Right before the P-N junction starts to allow a current to flow, and all the results for a reverse-biased diode). I've written them as follows due to division by zero's. The question really is "Is this the correct way I'd write this?"

2. Relevant equations

Uncertainty (Voltage) = Minimum readable voltage (0.01V) / Voltage observed

Uncertainty (Current) = Minimum readable current (0.01A) / Current observed

Uncertainty (Resistance) = Uncertainty (V) + Uncertainty (I)

3. The attempt at a solution

Voltage: 0.38

Voltage Uncertainty: ±2.63%

Max Voltage: 0.39

Min Voltage: 0.37

Current: 0.00

Current Uncertainty:±∞%

Max Current:0 < ∞

Min Current:0.00

Resistance:0 < ∞

Resistance Uncertainty:±∞%

Any suggestions are appreciated.

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# Homework Help: Diode characteristics/dealing with infinity

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