The document discusses basic electrical principles, including Ohm's Law and the relationship between voltage, current, and resistance. It explains units of power such as watts and kilowatts, emphasizing the rate at which electrical energy is consumed. Additionally, it provides practical energy-saving tips.

1. 1. It doubles
2. Resistance
Key Points:
1. As Voltage increases, Current increases
2. As resistance goes up, the current goes down
3. See in second graph, the multiplication V and I is constant
Voltage is 16 Volts
4. Ohm’s law (Ration of V/I is constant for each material
V = IR

2. 3. P= V X I = 12x 700 = 8400 W
4. V= IR= 2X12= 24 Volts
5. The 60 W bulb gives off energy more quicker
than 60 W bulb
6. Watts and Kilowatts
Key Points:
1. Power is rate at which electrical energy is converted to
other forms.
(how quickly the electrical energy is being consumed)
2. Unit of Power is KW. 1 KW= 1000 Watts

3. 7. E = P x t= 30W X 3600 sec = 108,000 J
8. P x t = 5 kw X 8 hour = 40 kwh
9. Turn off the light, turn down heat or AC, Use a fan
instead of AC