circuits

• What is an electrical circuit?

  An electrical circuit is a closed loop that contains a power source and a path for electrons to flow.
• What are the main components of a simple circuit?

  A simple circuit includes a power source, such as a cell, and a conductor, like a wire.
• How do we represent circuits visually?

  We represent circuits with circuit diagrams.
• What is the symbol for a cell in a circuit diagram?

  The symbol for a cell is a simple version of a battery.
• How is the symbol for a battery represented in circuit diagrams?

  The symbol for a battery is two cell symbols put together.
• What is the symbol for a filament lamp?

  The symbol for a filament lamp is a small light bulb.
• What happens when a switch in a circuit is closed?

  A closed switch allows current to continue flowing around the circuit.
• What is potential difference in a circuit?

  Potential difference is the force driving the flow of electrons, provided by the cell or battery.
• What is the unit of measurement for current?

  The unit of measurement for current is amperes, often called amps.
• What does the letter 'i' represent in a circuit?

  The letter 'i' represents current in a circuit.
• What is resistance in a circuit?

  Resistance is anything that opposes the flow of electrons in a circuit.
• What is the unit of measurement for resistance?

  The unit of measurement for resistance is ohms.
• What does the letter 'r' represent in a circuit?

  The letter 'r' represents resistance in a circuit.
• How do electrons flow in a circuit?

  Electrons flow from the negative terminal to the positive terminal of a cell or battery.
• What is conventional current?

  Conventional current is the flow of current from the positive terminal to the negative terminal.
• What do the longer and shorter lines on a cell symbol represent?

  The longer line represents the positive terminal, and the shorter line represents the negative terminal.
• Why is it important to remember the direction of current flow for exams?

  It's important because conventional current flows from the positive terminal to the negative terminal.
• What are the key terms related to circuits that need to be understood?

  • Potential difference (voltage)
  • Current (measured in amperes)
  • Resistance (measured in ohms)
• How do you draw a simple circuit diagram?

  1. Identify the power source (cell or battery).
  2. Add conductors (wires).
  3. Include components (like lamps or switches).
  4. Use correct symbols for each component.