Electricity and Magnetism

Magnetic Damping

Force on a wire with current flow

Diamagnetism and Paramagnetism

Apparatus for Induction Experiments, 650270:

• sturdy frame made of anodized aluminium
• predetermined magnet positions and locators for accessory
• current-swing excursion for current-balance experiments: 0, 15, 30 and 45 mm
• all parts can be fixed at the frame for storage
• magnet not included (see below)

Instruction sheet including examples and physical background: Electromagnetic-experiment-apparatus.pdf (120 kB)

Magnet with Variable Gap

Magnet with Variable Gap, 650269:

• gap can be varied from a = 2 mm to 80 mm
• field strength in the middle of the gap (±10 %):
  1000 mT at 2 mm gap
  20 mT at 80 mm gap
• neodymium magnets with D = 20 mm, H = 10 mm
• browned iron base, adjustment screws are made of stainless steel
• for experiments in a vertical field the magnet stands stable on the right (longer) end too

Instruction sheet including examples and physical background: Variable-Gap-Magnet.pdf (104 kB)

Lorentz Motor

Lorentz Motor, 650277

• no iron inside, the rotation results only from the Lorentz force
• the rolling direction is dependent of the current direction (this is a difference to "normal" DC motors)

Instruction sheet including examples and physical background: Lorentz-motor-en.pdf (67 kB)