Electricity: Series and Parallel Circuits

Series Circuits:
- In a series circuit, the components are connected in a single path.
- The same current flows through each part one after another.
- If a component breaks or is removed, the circuit is broken and no current will flow.
- The total resistance (Rt) in a series circuit is the sum of the individual resistances (R1, R2, etc.)
Parallel Circuits:
- In a parallel circuit, the components are connected alongside each other, creating separate paths for the current to flow.
- If one component breaks or is removed, the other paths will still have current.
- The voltage is the same across each branch of a parallel circuit.
- In a parallel circuit, the total resistance is less than the resistance of the smallest individual resistor.
Other Important Points:
- Ohm’s Law states that current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points.
- The unit of resistance is ohm (Ω).
- Resistors in both series and parallel circuits follow different rules. In a series, they simply add up. In a parallel circuit, they decrease.
- In a series circuit, the total voltage is the sum of the individual voltages across each component.

Remember to utilize formulae related to circuits, such as V=IR (Voltage = Current x Resistance)