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electrical resistance 1. The high-resistance paper has a resistivity of 1:25 Ωm. How do your values compare?...

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Physics

electrical resistance

1. The high-resistance paper has a resistivity of 1:25 Ωm. Howdo your values compare? What
are possible causes for discrepancies between the known value andyour calculated values?

Resistivity measurements

Measured resistance

Length

Width

Cross-sectional area

Resistivity

(Ω)

(m)

(m)

(m2)

(Ω·m)

1

18.6

.052

.015

.00078

.000134

2

17.5

.076

.02

.00152

.001151

3

52.

.10

.01

.001

.001300

4

5

6

** thickness = .25 mm


2. What are possible causes for discrepancies between theoreticaland measured values of resistors in series and in parallel?


3. When it is practical to connect resistances in series and whenin parallel?

Answer & Explanation Solved by verified expert
4.0 Ratings (582 Votes)
1 The possible reasons of discrepancies between the theoretical and measured values of resistances are Temperature as temperature increases resistivity increases Humidity Instrument    See Answer
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