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Question
Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
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Solution
Resistance(R) = \[\frac{\text{∆V}}{\text{∆I}}\]
= 10.2 – `"6.7"/"3"` – 2 = 3.5/1
R = 3.5Ω
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