Which of the following are rules for calculating parallel circuits when expressed as mathematical formulas? Select all that apply.
1) Ohm's Law: V = IR
2) Kirchhoff's Current Law: The sum of currents entering a junction is equal to the sum of currents leaving the junction.
3) Kirchhoff's Voltage Law: The sum of the voltage drops around any closed loop in a circuit is equal to the sum of the voltage sources in that loop.
4) The total resistance in a parallel circuit is calculated using the formula: 1/Rt = 1/R1 + 1/R2 + 1/R3 + ...
5) The total current in a parallel circuit is equal to the sum of the currents through each individual branch.