9. Household Circuits
Household circuits involve the electrical wiring systems that distribute electricity within homes. Understanding alternating current (A.C.) and direct current (D.C.), the main components of household circuits, safety measures, and the effects of short circuits and overloads are crucial for safe electricity usage in domestic settings.
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What we have learnt
- Household circuits distribute electricity safely through live, neutral, and earth wires.
- A.C. is preferred for household wiring due to its ability to be transmitted and transformed efficiently.
- Safety devices like fuses and MCBs protect against overloads and short circuits.
Key Concepts
- -- Alternating Current (A.C.)
- A type of electrical current that reverses direction periodically, used commonly in homes.
- -- Direct Current (D.C.)
- An electrical current that flows in one direction only, typically found in batteries.
- -- Fuse
- A safety device that melts to break a circuit when the current exceeds a safe level.
- -- Miniature Circuit Breaker (MCB)
- An automatic electrical switch that protects against overloads and short circuits by breaking the current flow.
- -- Earthing
- A safety procedure that provides a low-resistance path for fault currents to prevent electric shocks.
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