1. 10
12
total =
22

2. 10 12
total = 2

3. a. 27V and 45V:
This is simple additon, so V total = 27 + 45 = 72V
b. 15kW and 5000W
Watch the units!
V total = (15 x 103) + 5000 = (15 x 103) + (5 x 103) = 20 kW

4. a. 27V and -45V
V total = 27 + -45
= -18 V
b. 5A and - 500mA
Vtotal
5 + (500 x 10-3)
Convert the milliamps to amps.
=
= 5 + 0.5
= 5.5 A