Abstract: A current sensor is provided. The current sensor includes a signal transmission unit through which a power signal is transmitted, a current measurement probe spaced apart from a side of the signal transmission unit and having a loop structure so as to partition an area which links together with a magnetic field induced according to the power signal transferred through the signal transmission unit, and a signal processing unit measuring an induced current induced at the current measurement probe by a magnetic field, which is generated according to the power signal transferred through the signal transmission unit, and calculating a current value of the power signal transferred into the signal transmission unit from a value of the measured induced current.