Electricity

• Resistance : a measure of the opposing current flow in an electrical circuit.
• Voltage : A force that pushes the current through the circuit
• Current : The actual 'substance' that is flowing through the wires of the circuit (electrons)
• Reliability  : Ensuring consistent results by conducting an experiment more than once and determining an average ( removes the effect of outliers).
• Validity : Ensuring only the independent variable affects the results by having as many controls as possible.
• How to figure out resistance ?

  Voltage (voltage) / Current (ammeter)
• Static Electricity: a stationary electric charge, typically caused by friction, which causes sparks or crackling or the attraction of dust or hair.
• Current Electricity: the flow of electricity in an electronic circuit, and to the amount of electricity flowing though a circuit.
• Series Circuits:

  • Same current flows through all components
  • Voltage is divided across different components
  • Total resistance is sum of individual resistances
  • Total power is same for each component
  • If one component fails, the entire circuit is disrupted
• Parallel Circuits:

  • Current divides among different branches, each branch has independent current
  • Voltage is the same across each branch
  • Total resistance is less than individual resistances
  • Total power is sum of power consumed by each branch
  • If one component fails, others continue to function
• Independent variable : the variable that changes
• Dependent : the variable being measured