Thursday, February 19, 2009
Lenz'z Law and more
Complete to Q 23 P 128, Summarize Chapter 7
Lenz's Law current is generated make an pole that resists motion.
Push N to N, Pul N to S
The fields at the same so in a transformer more turns x less current, of less turn x more current. More turns less current, but more volts P=VxI
Eddie current - breaking . A moving conductor in a field will make N and S in an orientation that resists the movement - ie opposing is feed in repelling , and opposites are feed out
The breaking force is turned into electrical energy.
Make a battery by moving a conductor in an Magnetic field. The electrons and Protons are pushed in separate directions making a battery at the ends of the wire.
Lenz's Law current is generated make an pole that resists motion.
Push N to N, Pul N to S
The fields at the same so in a transformer more turns x less current, of less turn x more current. More turns less current, but more volts P=VxI
Eddie current - breaking . A moving conductor in a field will make N and S in an orientation that resists the movement - ie opposing is feed in repelling , and opposites are feed out
The breaking force is turned into electrical energy.
Make a battery by moving a conductor in an Magnetic field. The electrons and Protons are pushed in separate directions making a battery at the ends of the wire.
Wednesday, February 18, 2009
Lenz's Law
This lesson we successfully showed that a moving magnet or varying electromagnet creates a current in a solenoid that drags against the magnet.
The pages in the syllabus is link, Lenz's law is this link
Summarize this topic by working through HSC online.
Simulations on motors and generator
The pages in the syllabus is link, Lenz's law is this link
Summarize this topic by working through HSC online.
Simulations on motors and generator
Sunday, February 15, 2009
Homework
Do all questions up to number 23 Page 127 -128.
Hand in 2004 Exam questions.
Today Galvinometer, Loud speakers, Transformer effect - Magnetic Flux.
Also JA, HY, SZ to do Moodle.
Hand in 2004 Exam questions.
Today Galvinometer, Loud speakers, Transformer effect - Magnetic Flux.
Also JA, HY, SZ to do Moodle.
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About Me
- drhill
- I come from a Science family: My father Geoffrey Hill was Australia's first computer programmer on CSIRAC the fourth computer in the world. He is credited with invention of Computer music and the development of “Interprogram” a language before Basic. My PhD is in Atomic and Molecular Physics. I have researched the activated oxygen layer above the ozone layer, and 'Assigned' the world's smallest molecule. At the University of Toronto I researched high power UV lasers. I have specialized in automation in fibre optics. This developed into research in Machine Intellect and Robots. I have enjoyed work as an Explainer with Questacon and my time as a part-time soldier. I currently teach High School Science at Epping Boys’ High.