Energy and Electrical Circuits Quiz

Energy Transfer

• Energy transfer occurs when energy is moved from one object or system to another.
• Types of energy transfer:
  • Mechanical energy transfer: through direct contact (e.g., pushing, pulling)
  • Thermal energy transfer: through heat (e.g., conduction, convection, radiation)
  • Electromagnetic energy transfer: through light, radio waves, or other forms of electromagnetic radiation
• Energy transfer can occur through various mediums, including:
  • Solids (e.g., vibrations)
  • Liquids (e.g., convection currents)
  • Gases (e.g., convection currents)
  • Vacuums (e.g., electromagnetic radiation)

Electrical Circuits

• An electrical circuit is a path through which electric current flows.
• Components of an electrical circuit:
  • Voltage source (e.g., battery)
  • Conductors (e.g., wires)
  • Resistors (e.g., light bulbs, motors)
  • Capacitors (e.g., energy storage devices)
  • Switches (e.g., on/off devices)
• Types of electrical circuits:
  • Series circuits: components connected one after the other
  • Parallel circuits: components connected between the same two points
• Key concepts:
  • Ohm's Law: V = I × R (voltage = current × resistance)
  • Kirchhoff's Laws: rules for analyzing electrical circuits
  • Power: P = V × I (power = voltage × current)
  • Energy: E = P × t (energy = power × time)

Test your understanding of energy transfer types, mediums, and electrical circuits components, including conductors, resistors, capacitors, and switches.