5 Electricity and Magnetism
5.5 Magnetic Field and Magenetic Forces
Magnetic field of single coils/ Biot-Savart's law with Cobra3
P2430215
Curve of magnetic flux density (measured values)
for coils with a constant density of turns n/l,
coils radius R = 20 mm, lengths l1 = 53 mm, l2
= 105 mm and l3 = 160 mm.
Principle
The magnetic field along the axis of wire loops and coils of different dimensions is measured with a teslameter (Hall probe). The
relationship between the maximum field strength and the dimensions is investigated and a comparison is made between the
measured and the theoretical effects of position.
Related Experiment
Magnetic field of single coils/ Biot-Savart's law with a
teslameter
P2430201
Tasks
1. To measure the magnetic flux density in the middle of various
wire loops with the Hall probe and to investigate itsdependence on the radius and number of turns.
2. To determine the magnetic field constant
3. To measure the magnetic flux density along the axis of long
coils and compare it with theoretical values.
Magnetic field of single coils/ Biot-Savart's law with
Cobra4
P2430260
What you can learn about
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Cobra4 Experiment - available 2013
Wire loop
Biot-Savart's law
Hall effect
Magnetic field
Induction
Magnetic flux density
Main articles
Power supply, universal
Cobra3 BASIC-UNIT, USB
Movement sensor with cable
Measuring module, Tesla
Cobra3 current probe 6A
Hall probe, axial
Induction coil,300 turns,dia.40mm
13500-93
12150-50
12004-10
12109-00
12126-00
13610-01
11006-01
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PHYWE Systeme GmbH & Co. KG · www.phywe.com
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