The total current decreases because there is one less path for current to flow.

The total resistance increases because the total resistance is the sum of individual resistances.

The current through the resistor increases, according to Ohm's Law (V=IR).

The total current decreases, according to Ohm's Law (I=V/R).

This violates Kirchhoff's Junction Rule and the principle of charge conservation, which is not possible in a closed circuit.

Add the individual resistances: $R_{total} = R_1 + R_2 + R_3 + ...$

Calculate the reciprocal of the total resistance by summing the reciprocals of the individual resistances: $\frac{1}{R_{total}} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} + ...$

1. Identify the junction. 2. Determine the currents entering the junction. 3. Determine the currents leaving the junction. 4. Apply the rule: ΣI_in = ΣI_out.

The total current entering a junction must equal the total current leaving that junction, based on conservation of charge.

The rate of charge transfer; the amount of charge flowing past a point per unit time.

A measure of the opposition to current flow in an electrical circuit.

A circuit in which components are arranged along a single path, so the current is the same through all components.

A circuit in which components are arranged in multiple paths, so the voltage is the same across all components.

The electric potential difference between two points in a circuit, measured in volts.