The thesis describes a Rogowski coil and its use in electrical engineering. Rogowski coil described here is constructed on a printed circuit board. By using the four layer PCB, I achieved optimal number of windings for physical dimensions determined by the design, where return line is routed through a middle layer of the PCB. With this construction I avoided any complicated assembly with multiple PCBs. With introduction of the integrator, I have ensured that output signal corresponds to measured current. Given that this thesis is restricted on construction and manufacturing of the Rogowski coil and integrator circuit, and the fact that values I obtained with this construction differ from values obtained by using calibrated commercial current sensing probe, I think that with further development, sensitivity and accuracy can be increased.