Ohm's Law states that the voltage (V) across a conductor is equal to the current (I) flowing through it times its resistance (R).
In a series circuit, the total resistance is the sum of all individual resistances, so adding more resistors increases the total resistance.
In a parallel circuit, all components share the same voltage, but the current can vary between different branches.
Electrical power is measured in watts (W), which represents the rate of energy consumption or generation.
A capacitor stores electrical energy in an electric field and is used in various electrical applications to regulate voltage and power flow.