GEN PHYSICS 2 (FINALS)

• Electric Current


  The rate of flow of electrons in a circuit
• Electric Circuit

  A continuous path composed of conductors and conducting devices and including the electromotive force that drives the current around the circuit
• Ampere 


  Unit of current
• Closed Circuit


  The current path is continuous
• Open Circuit


  The current path is not continuous
• Electric Circuit


  Path of an electric current
• Short circuit 


  A closed circuit in which a direct connection is made, with no appreciable resistance, inductance, or capacitance
• Georg Ohm


  Pioneered Ohm’s Law
• Ohm’s Law


  States that the current flowing through the matallic conductor is directly proportional to the potential difference between its ends, as long as the temperature stays the same
• Resistance


  Ratio of the potential difference to the current
• Ω


  Unit of Resistance
• Power


  the rate of doing work
• Power


  the amount of energy transferred or converted per unit time
• Electrical Power


  the rate at which electrical energy is being used
• Electrical power


  in a circuit, it is given as the product of current and voltage
• Wires


  Circular rods made of metals or alloy
• Wires


  they are connected to a power supply, which provides the electricity to power up devices
• Electric Circuit


  The path where electricity flows into
• Electric Circuit


  A conducting path wherein there is presence of electricity and allows a device to function
• Electric circuit


  consist of an energy source which provides the energy needed to move the charged particles, a receiving component, and wires where the charges flow
• Complete circuit


  An electric circuit in which electricity flows throughout the whole loop
• Open circuit


  the flow of electricity is discontinuous at a certain point
• Types of electric current

  Conventional and Electron Current
• Conventional current 


  direction of flow of positive charges from the positive charges from the positive terminal of the battery to the negative terminal
• Electron current


  comes from the negative terminal
• Ammeter 


  used to measure the current of a circuit
• Dry cell


  most common type of battery
• Electrodes


  Anode and Cathode
• Electrodes


  Solid conductors in which electric charges enter and leave
• Cathode


  The negative electrode (negative terminal)
• Cathode


  Attracts cations or positive charges
• Cathode


  Source of electrons or an electron donor
• Anode


  The positive electrode (positive terminal)
• Anode


  attracts electrons or anions
• Anode


  source of positive charges or an electron acceptor
• If voltage is HIGH, electric current is also HIGH
• Voltage is directly proportional to the electric current
• Resistance prevents the flow of current
• If the electric resistance is low, the electric current would be high
• The resistance is inversely proportional to the electric current