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.