Water level sensing apparatus, water supply hose and washing machine having the same

A water level sensing apparatus (162; 262) which more precisely senses a level of supplied water, a water supply hose (63) and a washing machine having the same is provided. The water level sensing apparatus includes a main body (169) provided with an inner wall (166) and an outer wall (165) and filled with water supplied to the inside of the inner wall, a plurality of electrodes (167) inserted between the inner wall (166) and the outer wall (165) to be opposite to each other, and a micro-computer (160) to judge a water level in the main body (169) through variation of a capacitance value of the plurality of electrodes (167). Therethrough, the water level sensing apparatus (162; 262) more directly measures a water level, as compared to the conventional water level sensing apparatus, thus improving precision in water level measurement. Thereby, the water level sensing apparatus prevents unnecessary water supply and reduces energy consumption.