Motors & Generators Prac (1 Viewer)

[h_g]

Hey does anyone have notes or an experiment write up for this prac?

You will be required to plan and perform a first-hand investigation to predict and verify the effect on a generated electric current when:

- The distance between the coil and magnet is varied

- The strength of the magnet is varied

- The relative motion between the magnet and coil is varied.

 

[h_g]

anyone?

 

[anomalousdecay]

Try making your own experiment for this. Remember to have only one independent variable (only one thing that you change at a time) to verify the predictions you make.

For example, maybe write up a simple experiment on moving a magnet around a solenoid. The first one is easy. Set a particular distance for the magnet away from the solenoid and move it at a constant velocity and rate.

For the second one, use the same distance, same velocity, but two different magnets one at a time.

For the third one, use the same distance, same magnet, but try it with different velocities at a a time.

You should be recording your data via an ammeter, galvanometer (if you want to go retro!), etc. Voltage is the dependent variable.

Usually with a question like this in an exam, it will ask for a prac that can deliver all three. Make sure you note down that you only change one variable at a time during the test, repeat the tests multiple times to obtain more reliable results, etc.

 

[h_g]

Thanks all the experiments are done and the writeup is needed for the theory, can anyone explain how the prac is linked to Lenz's law?

 

[h_g]

As the distance is increased the strength of the magnetic field decreases thus less current is induced.

how can i make this third person passive?

 

[drainbammage]

dunno lel