Alternating voltages and currents change polarity periodically and are used in power transmission and distribution. Kirchhoff's law states that the algebraic sum of voltages around a closed loop is zero. In circuit shown in Figure 1, the voltage V3 is calculated using Kirchhoff's law.

1. ALTERNATING VOLTAGES AND CURRENT
Name : ………………………………………………. Course : ……………………………………..
Register num: : ……………………………………. Date : ……………………………………….
Instruction :
Answer all the questions
………………………………………………………………………………………………………………
1) Explain 3 reasons why AC is used in preference to DC
2) Calculate V3 as shown in Figure 1 using Kirchhoff’s Law.