1. Lecture 13 final part

2. Series RLC in alternating current The voltage in a capacitor lags behind the current by a phase angle of 90 degrees The voltage in a capacitor lags behind the current by a phase angle of 90 degrees The current is in phase with the voltage across the resistor The current is in phase with the voltage across the resistor The voltage in an inductor leads the current by a phase angle of 90 degrees. The voltage in an inductor leads the current by a phase angle of 90 degrees.

3. phase angle between current and total voltage Series RLC in alternating current

4. RLC NOT in series Z and φ are NOT as in a series RLC. Circuit can be solved using Kirchhoff’s rules. Limiting behavior: when the frequency is very high or very low

5. very large f, very small f

6. Xc= (open gap) XL=0 (shortcut) very LOW frequency XL= (open gap) Xc= 0 (shortcut) very HIGH frequency

7. Conceptual Example 4 The Limiting Behavior of Capacitors and Inductors The rms voltage of the generator is the same in each case. The values of the resistance, capacitance, and inductance are the same. The frequency of the ac generator is very near zero. In which circuit does the generator supply more rms current?