1. Make it simpler???

2. Up-comings Today – Quiz Today we try to finish the RL experiment
Monday – Dr. Dubey will introduce waves and then we will try to do the AC experiment (new handout)
Wednesday The Exam #3

3. Process Simplify the phasor diagram by taking wt=0 ; (t=0)
Calculate the reactances
Calculate the voltages
Add them all up as vectors.
Let’s see what this means

4. the phasor

5. capacitor phasor diagram

6. The AC Circuit
“i” The Same
EVERYWHERE

7. wt=0
Instantaneous current = i
Maximum Current = I Z
i(XL-XC) R R

8. Example
Problem A series RLC AC circuit has R = , L = 1.05 H, C = 4.00 μF, ω = 377 s-1, and ΔVmax = 150 V. Determine the inductive reactance, the capacitive reactance, and the impedance of the circuit. Find the maximum current in the circuit. Find the phase angle between the current and voltage. Find both the maximum voltage across each element.