Skip to main content

Electronics A Guide for Physicists (DRAFT -- in development)

Derek J. Thuecks

Section 2.9 Problems

  1. For the circuit in Figure 2.9.1, calculate the voltage at points A, B, and C if (a) A is the common, (b) B is the common, and (c) C is the common.
    Figure 2.9.1.
    🔗
    🔗
    🔗
  2. In the circuit shown in Figure 2.9.2, calculate the voltages at points A, B, and C.
    Figure 2.9.2.
    🔗
    🔗
    🔗
  3. A fixed \(1.0\text{k}\Omega\) resistor and a \(4.0\text{k}\Omega\) potentiometer are connected in series across a 5V battery of negligible internal resistance. Calculate the maximum and minimum values of \(V_{AB}\) based on possible potentiometer settings. (See Subsection 11.5.2 for an explanation of potentiometers.)
    Figure 2.9.3.
    🔗
    🔗
    🔗
  4. Calculate the current \(I\) in Figure 2.9.4.
    Figure 2.9.4.
    🔗
    🔗
    🔗
  5. Calculate the equivalent resistance between points A and B in Figure 2.9.5.
    Figure 2.9.5.
    🔗
    🔗
    🔗
  6. Use the branch method to determine values and directions for \(I_1\) and \(I_2\) in Figure 2.9.6.
    Figure 2.9.6.
    🔗
    🔗
    🔗
  7. Use the mesh method to determine values and directions for \(I_1\text{,}\) \(I_2\text{,}\) and \(I_3\) in Figure 2.9.7.
    Figure 2.9.7.
    🔗
    🔗
    🔗
  8. Determine an expression for \(V_2\) that results in zero current through resistor \(R_3\text{.}\) Your \(V_2\) expression may only depend on \(V_1\text{,}\) \(R_1\text{,}\) \(R_2\text{,}\) \(R_3\text{,}\) \(R_4\text{,}\) and \(R_5\text{.}\)
    Figure 2.9.8.
    🔗
    🔗
    🔗
  9. Calculate the Thevenin equivalents for the circuit in Figure 2.9.9.
    Figure 2.9.9.
    🔗
    🔗
    🔗
  10. Calculate the Thevenin equivalents for the circuit in Figure 2.9.10.
    Figure 2.9.10.
    🔗
    🔗
    🔗
🔗
PrevTopNext