Choose one word from the word list below to fill in the blank in each of the following sentences. a. ampere b. fault c. alternating current (AC) d. generator 1. ( ) is electric current that alternates between a positive maximum value and a negative maximum value at a characteristic frequency, usually 50 or 60 cycles per second (Hertz). 2. The ( ) is a unit of electric current flow. One ampere of current will flow when a potential of one volt is applied across a resistance of one ohm. 3. A ( ) is any unintended flow of current outside its intended circuit path in an electrical system. 4. A ( ) is a machine which converts rotating mechanical energy into electrical energy.