English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

I'm doing AQA modular Physics Module 6, and we've learnt how to predict the direction of the movement of a wire in a magnetic field when a current is passed through it, and the direction of the current in a wire passed through a magnetic field, but not how a dynamo works.
Any information on a dynamo would be helpful - but please keep answers to a 'GCSE Higher Triple Science' standard - I'm not that good!
I've got exams on the 26th and I'm aiming for an A* and I'm so close! Thanks so much!!!

2006-06-25 06:11:44 · 2 answers · asked by jeffner1990 2 in Science & Mathematics Physics

2 answers

by using the
Fleming's right hand rule
Fleming's right hand rule (for generators) shows the direction of induced current flow when a conductor moves in a magnetic field.
The right hand is held with the thumb, first finger and second finger mutually at right angles.
The Thumb represents the direction of Motion of the conductor.

The First finger represents Field.

The Second finger represents Current (in the classical direction, from positive to negative).

2006-07-01 00:22:43 · answer #1 · answered by raj 7 · 0 0

I'm doing the same test, but my teacher has not taught me much about dynamo's. A dynamo is the same as a motor, but instead of Turning electricity into movement it turns movement into electricity, therefore any rules we hare learned about motors should apply to dynamos and generators, but the other way round. Also you mention you have learned about how to work out the direction of the current in a wire passed through a magnetic field, this is the same principal as a dynamo. And by the way, in your question you mention a DC current in a dynamo, dynamo's only induce an AC current.

2006-06-25 06:28:13 · answer #2 · answered by True_Brit 3 · 0 0

fedest.com, questions and answers