Biot savart’s law

Item Code: SK022

Principle and Working:

A current carrying circular conductor loop produces a magnetic field along its axis which is defined by Biot Savart’s law.
B = μο / 2   x   I . R2 / (R2+x2)3/2
Where R=Radii of the loop, x =Distance from axis through center.
In present setup, three conductor loops of different radii mounted on a special loop holder is provided for investigation. The magnetic field is measured using axial hall probe. A high current power supply is provided to produce the magnetic field.




  • DC Regulated power supply with safety sockets and dual temperature controlled exhaust fan.
  • Digital Gauss meter with least count of 0.1 Gauss.
  • 3 coils with different diameter.
  • 4mm Safety sockets and plugs are used to make connection.
  • Specially designed hexagonal optical bench with locking arrangement for precise positioning.

  • To study the magnetic field of a circular conductor as a function of the current.
  • To study the magnetic field of a circular conductor as a function of distance along the axis of the conductor
  • To study the magnetic field as a function of loop radius.
  • Circular Loops : Copper, loop dia. 20mm, 80mm, 120mm wire dia. 3mm, loop holder rod 10mm dia.
  • Digital Gauss Meter : Range 200 G & 2 k G, sensor In As, display 3½ Meter digit LED, resolution 0.1G at 0 – 200 G, offset by potentiometer to set ZERO Input voltage 220 V, ± 5 %, 50 Hz AC
  • Power Supply : 0-30V DC, 0-20A, Input voltage 220V, ±5%, 50Hz AC, voltage resolution 0.1V, display 2½ digit LED, current resolution 0.1 A, primary fuse 8 Amp
  • 1 Optical bench (0.5m)
  • 1 Set of 3 circular loops with holders
  • 1 Power supply 0-30 V DC, 20 A
  • 1 Gauss meter with axial probe
  • 1 Flexible plug lead (100 cm), red
  • 1 Flexible plug lead (100 cm), black
  • 1 Fixed saddle
  • 1 Transversal Saddle with micrometer
  • 1 Axial Probe holder
  • Biot Savart’s law
  • Magnetic flux lines.
  • Induction.
  • Wire loop.