mrmackenzie

I found a decent image of a ring ciruit on wikipedia.  The page about ring circuits is not bad but those of you with a liking for diy might prefer the practical advice on ring circuits available from homebase.

We’ve been looking at the different properties of series and parallel circuits over the past week or so.  Since there are only 91 days left until Christmas, I thought I would ask you all for some shopping advice.

I need a new set of Christmas tree lights.  Should I be in the market for a set of lights built in series or parallel?  Don’t forget to tell me what information influenced your choice!

If you’re not sure why the series/parallel decision would make a difference to tree lights, you might want to check this site.  There’s also some information on series and parallel circuits here.

We looked at different types of lamp today, including filament lamps, neon & argon lamps, mercury vapour lamps, sodium lamps and fluorescent tube lights.
The wikipedia site has lots of information about different types of light.

See if you can find out how a halogen lamp works.

I’ve used the traffic lighting information you provided in your jotters to draw a bar chart showing how comfortable our class feels about each of the success criteria.

If you want to read the text along the x-axis, just click on this pdf version of the traffic light chart. You will be able to zoom in using Acrobat’s zoom feature and read the full text label for each of the criteria (get Adobe Acrobat Reader here).

I will address the topics attracting the highest red scores first, so we will start with “know that the declared value of an alternating voltage is less than its peak value”. We will start a lesson with this topic in the next week.

We looked at the relationship between current, voltage and power in our last lesson.  The good people at howstuffworks.com have an excellent page that summarises this topic – click here to check it out.

We had some discussion about the use of voltmeters and ammeters this week. I found this site tonight. It has information on several types of meter and is worth a look.