Final answer:
Kirchhoff's first rule, also known as the junction rule, states that the total current in the main line in a parallel circuit equals the sums of the individual branch currents.
Step-by-step explanation:
Kirchhoff's first rule, also known as the junction rule, states that the sum of all currents entering a junction must equal the sum of all currents leaving the junction. This holds true for parallel circuits. So, the statement that the total current in the main line in a parallel circuit equals the sums of the individual branch currents is true.