Vx (V) Lx (cm) 0.4 10 1 30 1.5 50 1.8 60 2.1 70 2.7 90 2. Using Table 6.1 plot a graph between values of Vx versus Lx. State your conclusion. (Plot Vx as a dependent variable). add the slope on your graph using add trendline option.
Vx (V) Lx (cm) 0.4 10 1 30 1.5 50 1.8 60 2.1 70 2.7 90 2. Using Table 6.1 plot a graph between values of Vx versus Lx. State your conclusion. (Plot Vx as a dependent variable). add the slope on your graph using add trendline option.
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Vx (V)
Lx (cm)
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0.4
10
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1
30
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1.5
50
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1.8
60
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2.1
70
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2.7
90
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2. Using Table 6.1 plot a graph between values of Vx versus Lx.
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State your conclusion. (Plot Vx as a dependent variable).
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add the slope on your graph using add trendline option.
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3. If the wire is uniform derive a simple relation between the
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voltmeter reading Vx at any point on the wire and the
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crosseponding distance Lx.
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B. Measurement of an unknown EMF
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1. Calculate and record Lx , the average value of Lx.
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Table 6.2
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Trail
Lx(cm)
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1
49.4
50
49.3
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3
49.5
Lx
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2. Use your graph of part A to find the value of Ex
corresponding to Lx
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3. What the current flowing through Ex when the pointer
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touches the potentiometer wire at the balance point.
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4. What happens to the balance point when a small resistor is
connected in series between EX and the gavanometer?
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Explain the result
you
observe.
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