1 An external resistor R is connected between the terminals of abattery. The value of R varies. For each R value, the current I inthe circuit and the terminal voltage Va of the battery aremeasured. The results are plotted in (Figure 1), a graph of Vabversus I that shows the best straight-line fit to the data.Figure< 1 of 1>Vab (V)32.028.024.020.02.00 3.00 4.00 5.00 6.00 7.00 8.00I(A) Part AUse the graph in the figure to calculate the battery's emf.Express your answer to two significant figures and include the appropriate units.HÀE =ValueUnitsSubmitRequest AnswerPart BUse the graph in the figure to calculate the battery's internal resistance.Express your answer to two significant figures and include the appropriate units.?ValueUnitsSubmitRequest AnswerPart CFor what value of R is Vab equal to 80.0% of the battery emf?Express your answer with the appropriate units.R =ValueUnitsSubmitRequest Answer

Answered: Image /qna-images/answer/0bea510e-b778-49fc-9974-1615417ddac8.jpg

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 V 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. Figure < 1 of 1 > Vab (V) 32.0 28.0 24.0 20.0 2.00 3.00 4.00 5.00 6.00 7.00 8.00 I(A)