3B SCIENTIFIC PHYSICS U11315 Instrucciones De Uso página 4

5. Sample experiment
5.1 Measuring the magnetic field of a current-
carrying coil
Apparatus required:
TM
1 3B NETlog interface
1 High-current sensor
1 Magnetic field sensor
1 Field coil
1 DC power supply unit 16 V/20 A
5 Connection leads from
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
U11300
U11315
U11360
U12252
U117361
U13802
Fig. 1: Measuring the magnetic field of a current-carrying coil
Fig. 2: Magnetic field against current
Subject to technical amendments
© Copyright 2009 3B Scientific GmbH
•
Set up the experiment according to Fig. 1
In order to build up a measurable magnetic field, a
current of up to 10 A must flow into the field coil.
At 10 A, the high-current sensor supplies a voltage
of 50 mV which is proportional to the current. The
selected measurement range is 200 mV at the em-
ployed voltage input of the interface.
•
Connect the magnetic field sensor to the inter-
face.
•
Increase the current in the field coil from 0 to
10 A in steps of 0.5 A and record the corre-
sponding flux density (Fig. 2).