Electronics

• What does Ohm's Law relate to?

  Current, voltage, and resistance
• What does 'I' represent in Ohm's Law?


  Current
• What does 'V' represent in Ohm's Law?


  Voltage
• What does 'R' represent in Ohm's Law?


  Resistance
• How is resistance calculated using Ohm's Law?


  Resistance is calculated as R = V/I
• What is the formula to calculate current using Ohm's Law?

  Current is calculated as I = V/R
• What is the formula for resistors in series?

  • R = R1 + R2 + R3
• What does resistor tolerance indicate?

  Variation in resistance value
• What does a silver band on a resistor indicate?

  10% tolerance
• What is the definition of voltage?

  Force that makes electrons flow
• What is the definition of current?

  Flow of electrons in a conductor
• What is the definition of resistance?

  How easily electrons flow through a conductor
• What is the unit of voltage?

  Volts (V)
• What is the unit of current?

  Amps (A)
• What is the unit of resistance?

  Ohms (Ω)
• What are examples of conductors and insulators?

  Conductors:

  • Metals
  • Copper
  • Gold
  • Graphene
  • Graphite

  
  

  Insulators:

  • Plastic
  • Rubber
  • PVC
  • Wood
• What are examples of input, control, and output devices in technology?

  Input:

  • Switches
  • LDR
  • Thermistor

  
  

  Control:

  • Transistor
  • Thyristor

  
  

  Output:

  • LED
  • Buzzer
  • Bulbs
  • Motor
• Ohms law

  I = current

  V = voltage

  R = resistance