The larger the radius of a wheel in comparison to the radius of its axle, the the mechanical advantage will be. a. greater
b. more stable
c. less stable
d. smaller

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.