Physics · Unit 1 · Electrical circuits · Current, potential difference and energy flow
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A student plots potential difference (V) versus current (I) data for a resistor. The graph shows a linear relationship passing through the origin with a gradient of 22 Ω and an uncertainty of ± 3 Ω. What is the resistance of the resistor?
A graph of potential difference (V) versus current (I) is plotted for a resistor. The line of best fit passes through the origin and the point (0.40 A, 9.6 V). Calculate the resistance of the resistor.
The graph below shows the relationship between electrical potential difference (V) and electric current (I) for a resistor. Using the gradient of the line to determine resistance, which statement correctly interprets the graph?