Presentation on theme: "Electrical Energy - Moving electrons in a path is electricity"— Presentation transcript:
1 Electrical Energy - Moving electrons in a path is electricity Electrical Potential Difference (v) is measured in VoltsThe rate of moving electric charges, Electric Current (I), is measured in AmperesResistance or opposition to the movement of the energy is called Resistance (R).
2 Circuits – 2 types Series circuits are the most simple. One (1) path for the current to travel.Contains an energy source, a path, and a load (something for it to do, like a lamp)
3 Circuits – 2 typesParallel circuits provide more than one path for the current to travel.Most circuits are parallel, since if one lamp goes out, the others can stay lit.
4 cause the light bulb to stop glowing? Which switches, if opened, willcause the light bulb to stop glowing?QRH. SJ. TIt is the only switch in series to both the battery and light.
5 USE THE FORMULA SHEET!! V = I R so, 9V = I x 2 ohms or 4.5 amps What is the current in a copper wire that has a resistance of 2 ohms and is connected to a 9 volt electrical source?A ampB ampsC ampsD ampsV = I R so,9V = I x 2 ohms or 4.5 amps