6th Grade Ch  2 Sec  4 Electrical Circuits
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6th Grade Ch 2 Sec 4 Electrical Circuits

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6th Grade Ch  2 Sec  4 Electrical Circuits 6th Grade Ch 2 Sec 4 Electrical Circuits Presentation Transcript

  • Sec. 4 Electrical Circuits
  • Ohm’s Law
    • Resistance= Voltage (volts)
        • (ohms) Current (amps)
        • R= V V=C X R
        • C
  • Ohm’s Law
    • Resistance= Voltage (volts)
        • (ohms) Current (amps)
        • Resistance= 10 ohms
        • Voltage= 20 volts
        • Current= ?
        • 10= 20
        • C
        • Current = 2 amps
  • Ohm’s Law
    • Resistance= Voltage (volts)
        • (ohms) Current (amps)
        • Resistance= ?
        • Voltage= 60 volts
        • Current= 2 amps
  • Find the missing variable.
    • Resistance= Voltage (volts)
        • (ohms) Current (amps)
    120 volts 4 ohms 80 volts 2 ohms 2 amps 100 volts 25 amps 75 volts Current Voltage Resistance
  • amp ammeter current Ohm multimeter resistance Volt voltmeter voltage unit measured with
  • basic features of a circuit:
    • source of electrical energy
            • eg. battery
    • have device run by electrical energy
            • eg. light bulb
    • connected by conducting wires & switch = used to open & close circuit
    • closed - circuit complete
    • open - circuit broken
  • Electrical Flow [02:04]
  • resistor
    • uses electrical energy as it interferes w/ flow of charge
  • Series and Parallel Circuits [00:36] . 2 types of circuits: series & parallel
  • series circuit only 1 path for current to take advantage disadvantages simple to build if 1 light goes out- all go out more bulbs added- greater resistance
  • series circuit
  • Christmas tree lights series circuit
  • several paths for current to take advantage more branches added- decreased resistance if 1 light goes out- other stay lit
  • household circuits-parallel circuits
  •  
  • series circuits vs. parallel circuits comparing circuits slideshow
  • Series and Parallel Circuits [02:02]