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Design Practical - Coggle Diagram
Design Practical
Design
Variables
Independent
Velocity of magnet
Dependent
magnitude of induced emf
Controlled
strength of magnet
resistance of system
motor used to move magnet
Materials
One magnet
Coil
Variable voltage motor
Camera
roughly 30cm of string
ammeter
alligator clip wires
Theoretical outcome
Proportional relationship between velocity and emf
emf=B
W
v
B - strength of magnet
W - width of magnet perpendicular to direction of travel
v - velocity of magnet
Errors
Systematic
friction at pulley
Inaccurate ammeter
too low frame rate on camera
Random
Inaccurate measurement of distance on string
frayed string resulting in variable friction