Quarter 3, Blogpost #5

Last week we learned about current, voltage, and resistance. Current is the number of charges passing a point per second or the rate of flow of charges. The variable which represents current is "I". The units in which current is measured is Amps. Voltage is the amount of work that each charge will do as it goes through the circuit, which can also be thought of as the amount of push on the charges. The variable that represents voltage is "V". Voltage is measured coulombs per joules or simply Volts. Lastly, resistance is the opposition to the flow of charge. Any appliance that asks the charge to do work will be slowed down by a resistor. The variable for resistance is "R". The units of resistance is Ohms. All three of these concepts were introduced to us this week and practiced while doing a Home Power Activity Lab. This lab required us to look around our homes and write down the current, voltage, and resistance of each appliance. Because most appliances only listed the current or voltage of each appliance, the equation R= V/I was used to find the missing variable. Above is a photo of my water heater. This appliance possessed the largest amount of current, voltage, and resistance. If used all the time, our electric bill would definitely be sky rocketing through the roof. But luckily, we have solar panels used to heat our water.