Would appreciate help with this question
2013 HSC 27b
Hey! So the things to discuss:
- The electric vehicle will propel itself using the
motor effect - Explain this effect for a mark.
- The electric vehicle will brake itself using the principle of
electromagnetic induction, as the movement of the wheels is used to induce a current in coil windings. This will brake the vehicle, because the induced currents create a magnetic field to interact with some other permanent magnetic field, to oppose the motion. Essentially, just typical stuff for a generator. Explain this for a mark.
- Analyse how these two processes are related in terms of energy, that is, electrical energy being converted into kinetic energy by the motor effect, and kinetic energy being converted to electrical energy by induction, for a mark.
- Last mark for identifying that these aren't perfect energy transformations, and so you'll always end up with less energy than you started with at the start of the process
(You might get marks for slightly different things, but this is an indicator)