circuit components

• What three subatomic components make up an atom?

  Electrons, protons, and neutrons
• Describe the structure of an atom.

  • Neutrons and protons in the nucleus
  • Electrons surrounding the nucleus in shells
• What are the two types of charged particles in an atom?

  Protons and electrons
• What is the charge of a proton?

  +1
• What is the charge of an electron?

  -1
• What happens in a closed circuit with potential difference?

  There will also be a current
• How is current defined?

  As the rate of flow of charge
• What are the units of charge?

  Coulombs, C
• What is the circuit symbol for a switch when closed?

  Closed
• What is the circuit symbol for a switch when open?

  Open
• What is the circuit symbol for a cell?

  + and -
• What is the circuit symbol for a battery?

  + - + -
• What is the circuit symbol for a lamp?

  Circle with a cross
• What is the circuit symbol for a fuse?

  Rectangle with a line
• What is the circuit symbol for a voltmeter?

  V
• What is the circuit symbol for an ammeter?

  A
• What is the circuit symbol for a diode?

  Arrow with a line
• What is the circuit symbol for a resistor?

  Rectangle
• What is the circuit symbol for a thermistor?

  Rectangle with a line
• What is the circuit symbol for a variable resistor?

  Rectangle with an arrow
• What is the circuit symbol for an LDR?

  Rectangle with a light symbol
• What is the circuit symbol for an LED?

  Arrow with a line and circle