level: electromagnetic induction
Questions and Answers List
level questions: electromagnetic induction
| Question | Answer |
|---|---|
| what is electromagnetic induction | if a wire is moved into a magnetic feild at right angles, voltage is induced. and if connected to a complete circuit a current it induced |
| ways to increase the size of the induced current | stronger magnet, stronger magnetic feild, move wire faster, wrap wire into a coil |
| what dictates the direction of the induced EMF? | it opposes the charge causing it, bar magnet approaches wire carrying a current which has been turned into a temporary magnet, this temporay magnet repels bar magnet approaching |