Electromagnetic Scale

The electromagnetic scale has a solid and elegant plexiglass structure.
One of the two arms ends with a rectangular aluminum coil immersed in the field of a powerful permanent magnet. The other arm has two sliding masses, which allow the item to obtain equilibrium at rest. Allowing the current to flow through the use of apparatus code 5361, a force F appears between the magnetic field B and the electric current i, whose value is given by the Ampere law:

F = B • l • i • sinα

where l is the length of the conductor and α is the angle created between the conductor and the magnetic field. It is possible therefore to verify that the intensity of the force reaches its maximum when α=90° and it is zero when α=0°. Using the power supply, the value i of the electric current can be read with an ammeter and, therefore, it is possible to deduce the permanent magnet’s induction value B. The experiment can be repeated replacing the permanent magnet with the solenoid. In this way it is possible to verify the
ratio which gives the value of the magnetic field inside a solenoid.
Scale sensibility: 10 mg.

Dimensions: 58x18x17cm.