I need some help working out what on earth goes on in electromagnetism. I have an exam tomorrow and I need to know about it.
Right hand rule and left hand rule
Increasing (insert word here) by increasing turns of coil, current or magnet power
Also what would I write if I was asked:
Describe how you would use a Geiger-Muller tube and counter to measure radioactivity (4)
Edexcel iGCSE Physics - Electromagnetism Watch
- Thread Starter
- 24-05-2016 18:22
- 25-05-2016 10:11
Electromagnetic induction is the production of an electromotive force or voltage across an electrical conductor due to its dynamic interaction with a magnetic field.
Right hand grid rule is, your thumb represents the current and the rest of your fingers (grip) represents the magnetic field lines.
Left Hand Fleminig's rule is quite simply. Your thumb represents the movement, your first finger represents the field lines and your second finger represents the direction of the current.
If you want to increase the Magnetic Field, you increase the size of the current by maybe having more cells. And increase the strength of the magnetic field (stronger magnets)
Geiger Muller Tube detects radiation. Each time it absorbs radiation, it transmits an electrical pulse to a counting machine.
Hope I helped.
- 25-05-2016 11:13
has anyone got the feeling that this test is going to be a *****?
- 25-05-2016 11:20