magnetic flux stuff

A useful website for magnetism and induction
http://www.s-cool.co.uk/a-level/physics/electromagnetic-induction/revise-it/flux-flux-linkage-and-how-do-you-induce-an-elect

Introductory work on EM induction

This work will form a solid background for all the work we do on magnetic fields and it is VERY important that you complete it to a high standard in order to avoid us falling behind.

• What is electromagnetic induction and how can it be demonstrated? What is required for the phenomenon to be observed?
• Research and write working definitions of the following terms;
• Magnetic flux
• Magnetic flux density
• Tesla
• Flux linkage
• Induced EMF
• Rate of change of flux linkage
• Faraday’s Law
• Lenz’s Law
• Transformer

Capacitor simultion

Link http://phet.colorado.edu/en/simulation/capacitor-lab

Learning Goals:

Students will be able to:

• Identify the variables that affect the capacitance and how each affects the capacitance.

·         Determine the relationships between charge, voltage, and stored energy for a capacitor.

·         Relate the design of the capacitor system to its ability to store energy.

Directions:

1.      Using the first 2 tabs , voltmeter, and battery, find variables that are used to design a capacitor. List them all.

2.      Identify what you would maximize or minimize to make a capacitor with the greatest capacitance. Are there items in the sim that do not appear to affect the capacitance? List them.

3.      Using the first 2 tabs , voltmeter, and battery, explore the relationships between charge, voltage, and stored energy for a capacitor. Summarize your findings.

4. If you wanted to design a capacitor system to store the greatest energy, what would you use? Sketch or describe your design.

Electric potential link

§http://www.s-cool.co.uk/alevel/physics/electric-potential/electric-potential-v.html

Some useful worked examples etc for electric fields