Aim: To complete into-science activities from last week if unfinished and to start making a floor plan of our house. Stem Question: What is Voltage and Current? Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field. The greater the voltage, the greater the flow of electrical current (that is, the quantity of charge carriers that pass a fixed point per unit of time) through a conducting or semiconducting medium for a given resistance to the flow. Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere, symbolized by A. One ampere of current represents one column of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second. Physicists consider current to flow from relatively positive points to relatively negative points; this is called conventional current or Franklin current. Electrons, the most common charge carriers, are negatively charged. They flow from relatively negative points to relatively positive points. Electric current can be either direct or alternating. To summarise Voltage is the potential difference in charge between two points in an electrical circuit. In other words, the voltage is the 'push' that makes the electrons move. Current is the rate of flow of electrical charges. In other words, if a few electrons are moving, the current will be low. If lots of electrons are moving, the current will be high. Lesson Outline: Because I had finished my Into-science activities last week, I decided to start creating a floor plan of our house. I first took a photo of our house and the using SmartDraw, I made a floor plan for it. In tomorrows lesson, I will create a circuit diagram and super-impose that over the top of the floor plan. Lesson Summary:
I Created a floor plan for our house I revised what current and voltage is.
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