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Sec. 1.2 Current Electricity

Sec. 1.2 Current Electricity. Pgs 279-283. Electric eel!!!!. Large eels (they can grow to 2.4 m long) can discharge enough electricity to kill a human being! Electricity is produces by a special organ in the tail that contains thousands of modified muscle cells.

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Sec. 1.2 Current Electricity

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  1. Sec. 1.2 Current Electricity Pgs 279-283

  2. Electric eel!!!! • Large eels (they can grow to 2.4 m long) can discharge enough electricity to kill a human being! • Electricity is produces by a special organ in the tail that contains thousands of modified muscle cells. • The electrical flows from an eel are so strong they have even been known to knock down a horse! • Why would an eel want to be an electric eel? Or how does this electricity benefit them?? Hint: Electric eels do not have any teeth.

  3. Electrical Current Electricity in an eel is similar to static charges you felt and saw yesterday, or like in lightening. Unfortunately, static charges are not useful for operating electrical devices. They build up and discharge, but the electricity does not flow continuously. Electrical Current – the steady flow of charged particles • Electrical current flow continuously, as long as two conditions are met: • Requires an energy source • Has a complete path or circuit for the charged particles to flow through

  4. Amperes Amperes (A) - rate of electrical current flow Examples: Light bulb: 0.5 A Microwave: 5 – 8 A Generating station: 1000s A Conductor – materials that electrical charge can move through easily.

  5. Conductors Conduction of electricity through wires allows for the transfer of electrical energy from place to place.

  6. Circuits A Circuit is a path that controls the flow of electricity. A circuit usually includes a conductor, an energy source and a load. A load is a device to convert electrical energy to another form of energy.

  7. Voltage Electrical energy is the energy carried by charged particles. Voltage is a measure of how much electrical energy each charged particle carries The higher the voltage, the greater the potential energy of each particle. The unit of voltage is volt (V).

  8. Voltmeters Simplest way to measure voltage. When using a voltmeter remember: Red is connected to positive Black is connected to negative **1 volt = 1000 millivolts Ex: 3000 milli volts = 3 volts 50 mV = 0.050 V

  9.  Check and Reflect  Page 283 Numbers: 1-4, 7-9

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