Electricity, Importance of electricity, Electric Current, Resistance

Electricity is a energy form that is resulting from the existence of charged particles, such as positive and negative charges orbiting around the nucleus. Electricity is used for cooking, communication, laptops among many other things in our everyday lives. Electricity is important because it helps us to see at night when its dark, power our televisions, it is made by burning oil and natural resources. Electric Current is the rate of charge flow past a given point in an electric circuit, measured in coulombs/second also known as Amperes. Resistance is the ratio of voltage applied to the electric current that flows through it using the equation R=V/I. If the resistance is constant over a range of voltage then Ohm's law can be used which is, I=V/R.

Capacitance

There are many uses of capacitors in our everyday lives, but the first one that i found was what i am using to type this right now and control my computer which is my mouse pad. Our mouse pads have two metal plates with terminals and a dialect in between them. The duty of a capacitor is just to store a charge. More examples of a capacitor besides the mouse of our keyboard are, the keys on our keyboard, our touchscreen phones, our TV remotes. All the buttons that we press have little capacitors inside of them. Without capacitors most of our electronics wouldn't be able to function.

Electric Potential Energy

Electric Potential Energy is the amount of energy a charge has based on the position of the charge in an electric field. The unit of Electric Potential Energy are Joules. In a diagram like the one above, the positive charges always have the higher potential energy and the negative charges always have the lower potential energy. Also, the flow of the energy in the diagram above goes from positive to negative. So if the positive test charge is near the positive charges it will have high potential energy, but if the positive test charge is near the negative charges then it will have a lower potential energy.