Distinguish Between Ac and Dc

question 21

Essay

Distinguish between ac and dc.When you plug a light bulb into a wall outlet,where is the source of electrons?

---

Definitions:

Open Circulatory System

A type of circulatory system found in some invertebrates where blood flows freely in the body cavity, bathing organs directly in blood.

Polyp

A hydralike animal; the sessile stage of the life cycle of certain cnidarians. Compare with medusa.

Stinging Cell

A Stinging Cell, or cnidocyte, is a specialized cell found in the tentacles of jellyfish and other cnidarians used for prey capture and defense by discharging a toxic substance.

Radula

A unique, toothed structure found in mollusks, used for scraping or cutting food before ingestion.