4.30 – Electric Current
Guided Notes
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DN Diagram
AC vs DC
AC –
DC –
Current –
Stop and Jot - Why should you not do this?
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Rainfall vs Waterfall analogy
Electric Current Equation
PP1) 60 Electrons pass a given point in a wire in three seconds.
a) What is the charge on the electrons?
b) What is the current going through the conductor?
Stop, Jot, Discuss - How do you think a defibrillator’s pads should be positioned?
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What safety tips should I remember, if I ever need to use a AED? (keep in
mind things we’ve learned so far about static electricity) Explain why each is
important
1) Area needs to be dry and driest person should operate device
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2) Remove Clothing and shave hairs
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3) Do not touch body when AED is activated
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5.2 Resistance
9V Battery and change
Short circuit –
Safety devices
Resistance
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Equation
PP1) What is the resistance of a 1.0 meter long copper wire with a diameter of 2 x 10-3 meters at 20 degrees celcius?
5/8/2017 – Series Circuits
Circuit Symbols
Battery
Resistor
Voltmeter
Light Bulb
Switch
Ammeter
Circuit Image
Circuit Diagram
5/9/2017 - Parallel Circuits
Circuit Image
Circuit Diagram
PP1) A 12V battery is connected in parallel to two light
bulbs, R1=10 ohms and R2=5 ohms
a) Draw a circuit diagram of the circuit to the left
b) Determine the Req of the circuit
c) Determine the total current in the circuit
d) Determine the current through the R1
e) What is the power usage of each light bulb?
PP2) A battery is connected in parallel to three light bulbs,
R1=8 ohms, R2 = 8 ohms and unknown R3. Ammeter A1
reads 3 amps when the switch is closed and Ammeter A2
reads 12 amps.
a) Draw a circuit diagram of the circuit to the left
b) Determine the value of the voltage source
c) Correctly draw a voltmeter that can read the
potential difference of the battery
d) Calculate Req of the circuit
e) What is the resistance of the unknown light bulb?