A light bulb emitting 1750 of luminous flux shines on a book that is 3.0 m away. In general terms, how will illuminance change as a person in the room moves the book closer to the light bulb? How does this illustrate an inverse-square relationship?

The text compares alternating current with direct current. how are they different? a alternating current reverses direction in the electrical wiring. direct current flows in one direction only. b direct current reverses direction in the electrical wiring. alternating current flows in one direction only. c direct current is powered by solar energy. alternating current is powered by electrical energy. d alternating current does not move in the electrical wiring. direct current does move in the electrical wiring.