27.6.08

Homework

Activity 16 D. Please make sure you have done 16 A-C also. We need to move on to power in DC circuits next week.

Potential Divider

Potential dividers are also known as voltage dividers.The potential divider is a useful circuit for providing a voltage to a component that requires a smaller voltage than the supply voltage in a circuit.
Potential divider
Follow these links for some webpages about potential dividers.
 
 
 

22.6.08

Resistance

Homework re-read chapter 16 upto to activity 16A and then complete the activity. Check out this webpage about resistance:
http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/resis.html#c1

9.6.08

New Topic Electricity

At last the Mechanics topic is over. This is the biggest topic in terms of content and although the topic test is behind us please don't forget what we have learnt. It is important to review some of the mechanics section every week as the year goes on so that when the final exams come up it is not just a distant memory.

Our next topic is electricity and we start with the idea of the electric field. The following two links are a good place to follow up what we talked about in class this morning.
http://www.colorado.edu/physics/2000/waves_particles/wavpart3.html
http://hyperphysics.phy-astr.gsu.edu/Hbase/hframe.html