Electric current

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    The objective: Through a scientific invention the student will create a model that transmits electrical current and demonstrate that electricity travels in a closed path. Materials: (6) light bulb, (6) battery, (6) 6 in. insolated copper wires, (6) wire stripper, (6) switches, (21) safety goggles, (21) aprons, and boxes of gloves. Vocabulary: Circuit, closed circuit, open circuit, electrical circuit, electromagnetic, and parallel circuit Engaged: We are going to do a KWL chart to find out, what you know about electrical current, what you want to know, and what you have learned. What do you know about electrical current? Is electricity something that can be seen? Can someone tell me what is electricity? Can you give me examples of electric current? Students I have a discrepancy event that I want you all to see. The materials that we need for this event is a battery, copper wire, and magnets. Can you think of a way that we can make…

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    Ohm’s law is the basic rule of the electricity that explains the relationship between electric current, voltage, and resistance. The ohm’s law was named after the German physicist Georg Ohm who discovered this rule or law. Ohm’s law statement Ohm’s law states that the electric current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance. In other words, the electric current flowing through the conductor increases with increase in…

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    was almost as fast as getting a texting back but the process of sending the message was a hastle. Having to decode the set of dashes, dots, and lines took minutes maybe hours and just as long to write another and tap the transmission key according to each letter in your message. The telegraph improved communication systems during the Industrial Revolution, gave a light to inventors, looking for new ways to communicate, and has impacted us in today’s society. The telegraph was developed in the…

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    born in London on September 22, 1791. He was the first person to produce an electric current from a magnetic field, He discovered diamagnetism and explained why some substances react opposite to a magnetic force when they encounter a magnetic field. He also discovered the effect of magnetism on light and he invented the electric generator and the electric motor.…

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    Encyclopædia Britannica, n.d). It is, therefore, reasonable to assume that a human could do 67% of this amount of work for a shorter amount of time. Generator What would happen to the force required to turn the generator if the bulb was taken out? Why? Of the bulb was taken out of the generator then the amount of work required to turn the generators handle would be decreased because generators create electrical energy by creating a changing magnetic field. This works by moving a copper coil…

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    For the circuits, I noticed the resistors demonstrate Ohm’s Law and the currents/voltages demonstrate Kirchhoff’s law. I also found that the LED’s brightness changes with the amount of current that flows through it. The more current that flows through, the brighter the LED becomes. I also noticed that in most of the circuits, the measured values were different than the nominal values because there was resistance found in the wires. This results a loss of energy from the…

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    circuit is a circuit in which current can only flow in one direction, constantly and with constant polarity. As opposed to alternating current, which changes its flow direction at regular intervals and can also increase or decrease in value. In this essay I will be mainly describing DC circuits wired in series, parallel, and series-parallel. In a DC series circuit the components are all wired together from end to end with the same amount of current flowing through each component. In a simple…

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    Yes, the ruler, which was used to measure the length of the cord and tape, collected data that could be trusted. This is because rulers are manufactured to specifically measure the lengths of objects. Therefore, the units on the ruler are exact, which allows the person carrying out the experiment to end up with precise data. Yes, the power pack which provided volts of electricity for the electromagnet to work, provided the experimenter with trustable data, which was the volts of electricity it…

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    They produce magnetic fields by their electrons spin in the same direction as their nucleus and create small magnetic fields. When they truly arrange themselves, they can produce a single magnetic field over all. Some permanent magnets are used in the basis of electromechanical device. The electromagnets are magnets controlled by electricity and the electrical current makes a magnetic field. They use negative and positive poles to make the magnetic fields. Some soft magnetic metals can be…

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    Davy ran into another problem that needed to be answered. Why was the needle attracted to the wire? It was not enough to just say that the electricity and magnetism affected each other. He needed evidence that supported his claims. Davy proceeded to throw “some iron filing on a paper, and brought them near the communicating wire, when immediately they were attracted by the wire, and adhered to it in considerable quantities… depended entirely on the passage of the electricity through the…

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