There are three main components needed to make a complete circuit. First, a power source is need, such as a battery. Next, you will need something that will take in the power. This can be anything like a heating coil, or light bulb, etc. Then you need the wiring that will connect to the object and receive power.
Answer: True
Explanation: It is used to fight bacteria
Answer:
a concave lens is exactly the opppostie with outer surfaces curving inward, so it makes parallel light rays curve outward or diverge. That's why concave lenses are sometimes called diverging lenses. ... The distance from the center of the lens to the focal point is, again, the focal length of the lens.
Explanation:
