1. If ?1 = 30sin (?? + 100 ) and ?2 = 20sin (?? + 500 ), which of these statements is true: (a) ?1 leads ?2 (b) ?2 leads ?1 (c) ?1 lags ?2 (d) ?2 lags ?1 (e) ?1 and ?2 are in phase 2.A series RC...

1. If ?1 = 30sin (?? + 100
) and ?2 = 20sin (?? + 500
), which of these statements is true:
(a) ?1 leads ?2 (b) ?2 leads ?1 (c) ?1 lags ?2 (d) ?2 lags ?1 (e) ?1 and ?2
are in phase

2.A series RC circuit has |??
| = 12 ? and |??
| = 5 ?. The magnitude of the supply voltage
is:
(a) -7 V (b) 7 V (c) 13 V (d) 17 V