Flashcard: Fundamentals of Electrical Circuits and Safety — 14 carte

Circuit symbol — purpose?

Graphical representation of components.

Power supply — role?

Provides current to the circuit.

Series circuit — current behavior?

Current is the same everywhere.

Parallel circuit — current split?

Divides at junctions among branches.

Current at junctions — law?

Total in = total out.

EMF in series — total?

Sum of individual EMFs.

Potential difference — parallel?

Same across all branches.

Resistors in parallel — combined?

Inverse sum of resistances.

Resistors in series — combined?

Sum of resistances.

Electrical hazard — mains?

Risk of shocks, fires, overheating.

Earth wire — safety?

Provides low-resistance path to earth.

Fuses — function?

Break circuit if current too high.

Overloading — risk?

Causes overheating and fires.

Lighting circuit — arrangement?

Uses parallel to ensure uniform brightness.