Electric power steering apparatus

A resistor member having a resistance value substantially equal to a resistance of a relay in an ON state is inserted into a current supply path which is not inserted with the relay in current supply paths for supplying currents from a driving circuit to a brushless motor (6). Further, in the driving circuit, widths (W) of bus bars (55) forming wirings are set such that resistances of the wirings (contact resistance) from a branch point on power source side to Hi side FET (51H) (source terminals thereof) are equal to each other and widths (W) of bus bars (55) forming the wirings are set such that the resistances of the wirings from a ground side branch point NL to Lo side FET (51L) (source terminals thereof) become equal to each other.