Question

An external resistor R is connected between the terminals of a battery. The value of R varies. For each R value, the current I in the circuit and the terminal voltage Vab of the battery are measured. The results are plotted in (Figure 1), a graph of Vab versus I that shows the best straight- line fit to the data. Part A Use the graph in the figure to calculate the battery's emf. Express your answer to two significant figures and include the appropriate units. E = 36 V Part B Use the graph in the figure to calculate the battery's internal resistance. Express your answer to two significant figures and include the appropriate units. r = Value Units

          An external resistor R is connected between the terminals of a battery.
The value of R varies. For each R value, the current I in the circuit and
the terminal voltage Vab of the battery are measured. The results are
plotted in (Figure 1), a graph of Vab versus I that shows the best straight-
line fit to the data.
Part A
Use the graph in the figure to calculate the battery's emf.
Express your answer to two significant figures and include the appropriate units.
E = 36 V
Part B
Use the graph in the figure to calculate the battery's internal resistance.
Express your answer to two significant figures and include the appropriate units.
r = Value Units

An external resistor R is connected between the terminals of a battery.
The value of R varies. For each R value, the current I in the circuit and
the terminal voltage Vab of the battery are measured. The results are
plotted in (Figure 1), a graph of Vab versus I that shows the best straight-
line fit to the data.
Part A
Use the graph in the figure to calculate the battery's emf.
Express your answer to two significant figures and include the appropriate units.
E = 36 V
Part B
Use the graph in the figure to calculate the battery's internal resistance.
Express your answer to two significant figures and include the appropriate units.
r = Value Units

Added by Luisa G.

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