A satellite is in orbit at a distance r from the center of Earth. If the orbit radius is reduced to one third of its original radius so that the satellite is orbiting closer to Earth's surface, will the field strength: a. increase,
b. decrease, or
c. stay the same

Alternating Current (AC).

Explanation:

The current that is provided to consumers in the United States changes direction sixty times a second. This household current is called alternating current (AC). Alternating current is much more efficient in transmitting electricity than direct current is. In order to produce this current, it is found in Alternating Current Power Plants.