According to one embodiment, an electronic apparatus includes power transmission circuitry, and detection circuitry. The power transmission circuitry transmits power by an electromagnetic wave with a first frequency band. The detection circuitry receives a reception signal and performs carrier sense with a second frequency band different from the first frequency band. The detection circuitry includes interference avoidance circuitry that eliminates a signal having a third frequency band which is a part of the second frequency band from the reception signal.