No investigation into electromagnetic theory is complete without measuring the inductance and self-inductance of a current-carrying coil (depending on the insertion of an iron core) and exploring AC circuits.
Our copper wire coil features a shock-resistant plastic casing with lifting handles, a coated iron core mounted on a worm screw for moving in and out of the coil, and a scale printed in cm for reading the length of core inserted into the coil.
Number of windings: 3000
Max. permissible voltage: 30 V AC, 60 V DC
Max. permissible current: 2 A
Inductance: continuously adjustable from 0.15 to 1.4 H, for current of approximately 1 A
Resistance: 12.5 O
Connections: via 4-mm safety plugs
Dimensions: 265 mm x 145 mm x 130 mm
Weight: 6.2 kg
![Variable Inductance Coil, 1003194 [U21903], Induction](/imagelibrary/U21903/U21903_01_Variable-Inductance-Coil.jpg)
![Variable Inductance Coil, 1003194 [U21903], Induction](/thumblibrary/U21903/U21903_01_1200_1200_Variable-Inductance-Coil.jpg)
![Force on a Conductor in a Magnetic Field, 1003251 [U30065], Magnetic Fields](/thumblibrary/U30065/U30065_01_140_140_Force-on-a-Conductor-in-a-Magnetic-Field.jpg)
![Permanent Magnet with Adjustable Pole Spacing, 1002660 [U10370], Conductors in Magnetic Fields](/thumblibrary/U10370/U10370_01_140_140_Permanent-Magnet-with-Adjustable-Pole-Spacing.jpg)
![Lorentz Motor, 1002662 [U10372], Conductors in Magnetic Fields](/thumblibrary/U10372/U10372_01_140_140_Lorentz-Motor.jpg)
![Rubber Band, 1000702 [U56002], Mechanical Waves](/thumblibrary/U56002/U56002_01_140_140_Rubber-Band.jpg)
![Metal Ring for Thomson Coil, 1000992 [U8497470], Demountable Transformer D](/thumblibrary/U8497470/U8497470_01_140_140_Metal-Ring-for-Thomson-Coil.jpg)
![Set of 3 Induction Coils, 1000590 [U122501], Induction](/thumblibrary/U122501/U122501_01_140_140_Set-of-3-Induction-Coils.jpg)
![Field Coil 120 mm, 1000592 [U12253], Magnetic Fields](/thumblibrary/U12253/U12253_01_140_140_Field-Coil-120-mm.jpg)
![Red Laser Diode, 650 nm, 1003201 [U22000], Optical Lamps on Stem](/thumblibrary/U22000/U22000_01_140_140_Red-Laser-Diode-650-nm.jpg)
![DC Power Supply 20 V, 5 A
(230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Helical Springs 5.25 N/m, 1000741 [U8401010], Coil Springs](/thumblibrary/U8401010/U8401010_01_140_140_Helical-Springs-525-Nm.jpg)
![Stand for Cylindrical Coils, 1000964 [U8496150], Magnetic Fields](/thumblibrary/U8496150/U8496150_01_140_140_Stand-for-Cylindrical-Coils.jpg)
![Fusion Ring, 1000980 [U8497310], Demountable Transformer D](/thumblibrary/U8497310/U8497310_01_140_140_Fusion-Ring.jpg)
![Helical Springs 20 N/m, 180 mm, 1002946 [U15028], Coil Springs](/thumblibrary/U15028/U15028_01_140_140_Helical-Springs-20-Nm-180-mm.jpg)
![Set of 10 Tracing Compasses, 1003095 [U19562], Magnetic Fields](/thumblibrary/U19562/U19562_01_140_140_Set-of-10-Tracing-Compasses.jpg)
![Objective for Beam Divergence, 1000675 [U22002], Optical Components on Stem](/thumblibrary/U22002/U22002_01_140_140_Objective-for-Beam-Divergence.jpg)
![Set of 10 Weights, 20 g, 1000769 [U8404700], Balance Weights](/thumblibrary/U8404700/U8404700_01_140_140_Set-of-10-Weights-20-g.jpg)
![Helical Springs 2,5 N/m, 1003515 [U8405820], Coil Springs](/thumblibrary/U8405820/U8405820_01_140_140_Helical-Springs-2-5-Nm.jpg)
![Iron Wire 0,3 mm/ 100 m, 1000950 [U8495460], Circuits](/thumblibrary/U8495460/U8495460_01_140_140_Iron-Wire-0-3-mm-100-m.jpg)
![Constantan Wire 0,2 mm / 100 m, 1000955 [U8495527], Circuits](/thumblibrary/U8495527/U8495527_01_140_140_Constantan-Wire-0-2-mm-100-m.jpg)
![Coil D with 600 Turns, 1000988 [U8497430], Demountable Transformer D](/thumblibrary/U8497430/U8497430_01_140_140_Coil-D-with-600-Turns.jpg)