PH-1293
Circuit components
Physics · Secondary 4 · Medium · Circuit components
In a circuit to measure the I–V characteristic of a diode, a student places the ammeter in parallel with the diode instead of in series. What is the main problem with this setup?
- Most current bypasses the diode so its current cannot be measured correctly.
- The ammeter will measure the voltage instead of current.
- The diode will be reverse‑biased and not conduct.
- The total resistance of the circuit becomes zero so no current flows.
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