THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Experimental graphs
Read the slope, not a single ratio
A voltage sensor has a constant offset. Three idealized readings follow V = RI + V₀: (I, V) = (0.10 A, 0.80 V), (0.30 A, 2.00 V), (0.50 A, 3.20 V).
| Current (A) | Voltage (V) |
|---|---|
| 0.10 | 0.80 |
| 0.30 | 2.00 |
| 0.50 | 3.20 |
Find R from the data.
Organize the givens & assumptions
- Model: V = RI + V₀
- Three readings are listed in the data table
- V₀ is constant but unknown
Constant resistance and sensor offset; the listed points are exact for this model. No fit uncertainty is requested.
- A
- B
- C
- D
Try it on paper first. Free sample problems in every collection include the complete reasoning: find one in this collection →