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#2 AC vs DC [Post Homework Here]
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Re: #2 AC vs DC [Post Homework Here]
Hello,
What you have there looks more like a headphone set for a cell-phone. You can still use this for the course, but the wire is very thin so it might be difficult getting it into a breadboard.

The best thing to do, if you have a soldering iron, is to solder a little bit onto each wire. This will add some tin to them and make them more sturdy for use with a breadboard.
Alternatively you can go to the store and get a 'stereo cable' like this one and cut off the end, the wire inside should be a little thicker than your headphone set.
But you should try using the headphone set first, as it should work with all the experiments in this course.
Good luck!
Re: #2 AC vs DC [Post Homework Here]
Homework Lesson 2 AC/DC
Q1) DC electricity is a stable non varying form. When graphed as voltage versus time the voltage will be a constant value. AC is a varying form of electricity. When graphed as voltage versus time AC voltage will rise above (positive) zero volts and fall below zero (negative) volts. The number of positive/negative alternations in a second is called the AC frequency.
Q2) We can change or vary three things to convey "something" with an AC voltage:
a) Amplitude (distance above and below zero volts)
b) Frequency (one positive with one negative alternation is one cycle. If this cycle occurs 60 times
a second the frequency is 60Hz)
c) Phase (or form) (example:keep all alternations above zero volts for a period of time)
Q3) An O'scope allows us to actually see the AC signal! (Could be used to see a varying DC signal used in digital electronics)
Q4) The voltage from a fully charged battery will be a constant value, say, 9 volts (although the ones I used for the Wien oscillator circuit were 9.3 volts....). The voltage from a home outlet varies between +125 volts to -125 volts 60 times a second (60Hz).
Q1) DC electricity is a stable non varying form. When graphed as voltage versus time the voltage will be a constant value. AC is a varying form of electricity. When graphed as voltage versus time AC voltage will rise above (positive) zero volts and fall below zero (negative) volts. The number of positive/negative alternations in a second is called the AC frequency.
Q2) We can change or vary three things to convey "something" with an AC voltage:
a) Amplitude (distance above and below zero volts)
b) Frequency (one positive with one negative alternation is one cycle. If this cycle occurs 60 times
a second the frequency is 60Hz)
c) Phase (or form) (example:keep all alternations above zero volts for a period of time)
Q3) An O'scope allows us to actually see the AC signal! (Could be used to see a varying DC signal used in digital electronics)
Q4) The voltage from a fully charged battery will be a constant value, say, 9 volts (although the ones I used for the Wien oscillator circuit were 9.3 volts....). The voltage from a home outlet varies between +125 volts to -125 volts 60 times a second (60Hz).
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Re: #2 AC vs DC [Post Homework Here]
wr9h wrote:Homework Lesson 2 AC/DC
Good answers! All correct.
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