Measure the magnetic field of different diameter coils and show that the field at the center depends inversely with the radius of the coil. This device also enables you to measure the magnetic field of circular coils with different radii as a function of the distance. Uprights are mounted on a specially designed hexagonal optical bench with locking arrangements for precise positioning and smooth motion. Circular coils with different radii are mounted on the same upright; each is easily changable. An additional support at the center of optical bench minimizes the possibility of sagging. A set of three circular wires with holders, saddle, and Gauss meter with hall probe are included in addition to the optical bench. A constant current power source of 20 Amps is required, and available separately.
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