Electricity 1

• A parallel circuit is a circuit in which the components are connected across multiple paths, so the current splits and flows through each component simultaneously.
• What is the fundamental unit of measurement for current?

  The fundamental unit of measurement for current is amperes (A).
• What are the four basic parts of a simple circuit?

  Energy source, conducting path, load, switch.
• How is voltage defined in an electrical circuit?

  Energy to push charges; measured in volts (V).
• What does resistance measure in a circuit, and in what unit is it measured?

  Restriction to current; measured in ohms (Ω).
• Describe the analogy used to explain the role of voltage, resistance, and a switch in a circuit.

  Voltage = pump pressure; resistance slows; switch controls flow.
• What is a series circuit?

  Components in line, voltage split.
• What is a parallel circuit?

  Separate branches, same voltage, split current.
• What is Ohm's Law, and what does it describe?


  Relationship between current, voltage, resistance.
• How do AC and DC differ in terms of electron movement?

  DC flows one way; AC, back and forth.
• What substances allow current flow, and what substances do not?

  Conductors allow; insulators don't.
• What is the purpose of devices like electric kettles and toasters in a circuit?

  Convert electrical energy to heat and light.
• How do you measure resistance?

  V divided by I
• How do you measure Current?

  V divided by R
• What is Electrical Energy Efficiency?

  Is the reduction in power and energy demands from the electrical system.
• How to calculate Power?

  Power = Energy divided by Time
• What is a Watt?


  the unit of electrical power equal to one ampere under the pressure of one volt.
• What is a circuit?

  A path for electricity to flow from a power source to an energy user.
• What is a Conducting Path?


  Wires that allow electricity to flow through the circuit.
• What is a Conductor?


  Substance that easily allows current to flow through, like metals.
• What is a Energy Source?


  Provides energy to the circuit.
• What is a independent variable? 


  A variable that stands alone, isn't changed by other variables you are trying to measure
• What is a dependant variable?


  The variable that changes as a result of the independent variable manipulation.
• What is a controlled variable?

  It is a variable that doesn't change in an experiment.
• The formula for calculating charge is Q= I x t