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Understanding Inductance and Circuit Applications

This chapter introduces and explores the concepts of mutual and self-inductance, magnetic field energy, and R-L, L-C, and L-R-C circuits. Learn how these principles are applied in various applications and analyze different circuit configurations.

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Understanding Inductance and Circuit Applications

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  1. Chapter 30 Inductance

  2. Goals for Chapter 30 • To introduce and illustrate mutual inductance • To consider self-inductance • To calculate magnetic-field energy • To describe and study R-L circuits • To describe and study L-C circuits • To describe and study L-R-C circuits

  3. Introduction • A charged coil can create a field that will induce a current in a neighboring coil. • Inductance can allow a sensor to trigger the traffic light to change when the car arrives at an intersection. This device is my favorite … I know when I’m sitting through an old light, it cycles for 2 minutes before I can go.

  4. Mutual inductance • A coil in one device generates a field that creates a current in a neighboring coil. You could use this principle to create a charger that restores a battery without an actual connection, just proximity.

  5. Mutual inductance—examples • Refer to Example 30.1. • See Figure 30.3 below. • Follow Example 30.2.

  6. Self-inductance

  7. Applications and calculations • Consider Figures 30.6 at right. • Follow Example 30.3 illustrated by Figure 30.8 below. • Follow Example 30.4.

  8. Magnetic field energy • Consider Figure 30.10, below center. • Refer to Example 30.5. • Refer to Example 30.6.

  9. The R-L circuit • Read Problem-Solving Strategy 30.1. • Consider Figure 30.11, in the lower-left quadrant of the page. • Consider Figure 30.12.

  10. R-L circuit II • Follow Example 30.7. • Consider Figure 30.13 at right. • Follow Example 30.8.

  11. The L-C circuit • Consider Figure 30.14.

  12. Applications and comparisons • Consider Figure 30.15. • Use Table 30.1. • Follow Example 30.9. • Follow Example 30.10.

  13. The L-R-C circuit • An application of the damped oscillator. • Consider Figure 30.16. • Consider Figure 30.17. • Follow Example 30.11.

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