Science t4 test

Current

Current

Current is the flow of electric charge (typically electrons) through a conducting path.

Voltage

Voltage is a measure of electric potential difference between two points. It provides the "push" that drives electrons through a circuit.

Current in a series circuit

Current is the same throughout all components because there’s only one path for it to follow.

Current in a parallel circuit

The total current is the sum of the currents in all branches, but the current differs based on the resistance of each branch. More branches = more current

Voltage in a series circuit

Voltage is divided across each component based on their resistance

Voltage in a parallel

The voltage across each branch is the same as the total voltage supplied by the source. Then divided by branches like a series

resistance in series

The total resistance of a series circuit is the sum of the individual resistances, meaning the more components you add, the higher the total resistance.

resistance in parallel

Take the reciprocal (1 divided by) of each resistor’s resistance.Add the reciprocals together.Take the reciprocal of the sum to get the equivalent resistance.

Resistance

Resistance is the opposition to the flow of electric current in a material or circuit. It slows down the movement of electrons, making it harder for current to pass through. It releases excess energy in the form of heat

Conductivity

Conductivity is the ability of a material to allow the flow of electric current. Materials with high conductivity (called conductors) have free electrons that move easily, allowing electricity to pass through them with little resistance.