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Electromagnetic Balance

Electromagnetic Balance

CAT NO: DIDACTICELECTROMETER0133

Electromagnetic Balance Description and Tender Specification:

Electromagnetic Balance.

ELECTROMAGNETIC BALANCE
The end of one of the two arms of this balance is equipped with a rectangular turn of aluminium with base of 4 cm, immersed in the field of a powerful permanent magnet. The other arm is provided with two sliding masses that enable to reach the equilibrium in rest conditions.
When some current crosses the circuit, a force F is generated between magnetic field B and electric current I : its value is determined by Ampère’s law: F = B
l I sine α where l is the length of the conductor and α is the angle existing between the conductor and the magnetic fi eld.
Thus it is possible to verify that the intensity of this force is maximum when α = 90°, and null when α = 0°.
Value I of electric current can be read on the ammeter included in the equipment ; then induction B of the permanent magnet can be determined.
Repeat this test by replacing the permanent magnet with a solenoid. Thus the relation that gives the value of the magnetic field inside a solenoid can be verified. Balance sensitivity: 10 mg Dimensions : 45 x17 x 22 cm.
COMPONENTS:
1 Balance elettromagnetica
1 permanent magnet
1 Solenoid
1 Set of weights of 200 g with fractions of gram
1 Heat sink resistor

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