Page 370 - Schaum's Outline of Theory and Problems of Applied Physics

CHAP. 29] ALTERNATING-CURRENT CIRCUITS 355

Fig. 29-5

Fig. 29-6

voltage of the source and (b) the phase angle in the circuit.

2
2
(a) V = V + (V L − V C ) = (5V) + (7V − 10 V) 2
2
R
√

2 2 2 2 2
= (5V) + (−3V) = 25 V + 9V = 34 V = 5.8V
We note that the effective voltages across C and R are greater than the effective applied voltage.
7V − 10 V 3
V L − V C
(b) tan φ = = =− =−0.6
V R 5V 5
φ =−31 ◦