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Electrical Measurements

Curriculum

  • 1 Section
  • 34 Lessons
  • Lifetime
Expand all sectionsCollapse all sections
  • Electrical Measurements
    34
    • 1.1
      Measure Voltage
    • 1.2
      Script and Tests
    • 1.3
      How it Works
    • 1.4
      Review and Practice
    • 1.5
      Solutions
    • 1.6
      Measure Resistance
    • 1.7
      Script and Tests
    • 1.8
      How it Works
    • 1.9
      Series vs. Parallel
    • 1.10
      Review and Practice
    • 1.11
      Solutions
    • 1.12
      Measurement Units
    • 1.13
      SI Units
    • 1.14
      Metric Prefixes
    • 1.15
      Convert Prefixes to Values
    • 1.16
      Prefix to Values Script and Tests
    • 1.17
      How the Prefix to Values Script Works
    • 1.18
      Convert Quantities to Values
    • 1.19
      How it Works
    • 1.20
      Script and Tests
    • 1.21
      Review and Practice
    • 1.22
      Solutions
    • 1.23
      Measure Current
    • 1.24
      Script and Tests
    • 1.25
      How it Works
    • 1.26
      Use Kirchoff’s Current Law
    • 1.27
      Review and Practice
    • 1.28
      Solutions
    • 1.29
      Ohm’s Law
    • 1.30
      Script and Tests
    • 1.31
      How it Works
    • 1.32
      Using Ohm’s Law
    • 1.33
      Review and Practice
    • 1.34
      Solutions

Solutions

Measure Current: Solutions

Questions

  1. Answer: In series.
  2. Answer: The current should decrease.  We observed that by replacing the 200 Ω resistor with a 1 kΩ resistor.
  3. Answer: Ohm’s Law
  4. Answer: Kirchhoff’s current law

Exercises

  1. Answer: I = V/R = 1 V / 100 Ω = 0.01 A = 10 mA
  2. Answer: I = V/R = 2.2 V / 1000 Ω = 0.0022 A = 2.2 mA
  3. Answer: I = I1 + I2 + … + IN = 1 mA + 1 mA + 1 mA = 3 mA  
  4. Answer: 9 mA = 5 mA + IB → IB = 9 mA – 5 mA = 4 mA

Projects

  1. Solution: Individually, each circuit conducts approximately 1 mA.  Together, they should conduct 2.
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Review and Practice
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Ohm’s Law
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