Name _____________________ Battery‚ resistance‚ and current – Lab 17 Go to http://phet.colorado.edu/en/simulation/battery-resistor-circuit and click on Run Now. Batteries‚ Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”‚ watch what happens‚ adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery‚ label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal
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Batteries‚ Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”‚ watch what happens‚ adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery‚ label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery. The electrons move because of the battery voltage. The current flows in the opposing direction of the electrons and the electrons flow towards the positive
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Magnetic effect of electric current is one of the major effects of electric current in use‚ without the applications of which we cannot have motors in the existing world. A current carrying conductor creates a magnetic field around it‚ which can be comprehended by using magnetic lines of force or magnetic field lines. The nature of the magnetic field lines around a straight current carrying conductor is concentric circles with centre at the axis of the conductor. The direction of the magnetic field
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resistance or low resistance? Why? ➢ Yes‚ it is desirable for an ammeter to have a high resistance or low resistance because the lower the resistance‚ the better the ammeter as it is connected in series and so its resistance will affect the current flow and thereby affect any calculations to be obtained. 2. An ammeter of resistance Ra is connected through a rheostat to a cell of negligible internal resistance. When the rheostat is adjusted to a value R1‚ the ammeter reads 0.75 of the full-scale
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Most people would say that Benjamin Franklin discovered electricity but really he discovered the relationship between lighting and electricity. Otto Von Guericke discovered electricity in 1660 when he made the first electric generator. Joseph Henry would then invent the electric battery and would change the world. The very first portable electricity. People could power things they couldn’t before. Moving forward Henry Ford would use electricity and the battery to make the first assembly line and
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AVOID THEM Phy X: ELECTRICITY 1. Topic Direction of flow of current. Common slips made Confusion between direction of flow of current and direction of movement of electrons Confusion in use of symbols- Is ampere written as A or amp. V=W/Q is often remembered wrongly. In questions where you have to check the resistance from the graph see what is plotted along the x and y axis. Reason why alloys are used to make elements of electric irons and heaters is not because they are insulators. 2.
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vegetables could generate an electric charge. We also wanted to find out which ones had the greatest and least charge. Our hypothesis stated that the potato would have the greatest charge. II. Methodology: The materials we used for this project were the fruits and vegetables and an amp meter to measure the current flow in them. We
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constitute a current of 1 ampere. Ans. Question 3 Name the instrument used to measure electric current in a circuit. Ans. Ammeter Question 4 In the following table the values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are shown : I(amperes) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 | V(Volts) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 | Plot a graph between V and I and use this graph to find the value of current when potential
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________________________ Date ___________ Block ___ Electric Currents Review 1) When work is done on a positive test charge to move it from one location to another‚ potential energy ______________ (increases‚ decreases) and electric potential _____________________ (increases‚ decreases). 2) When a positive test charge naturally moves from one location to another (without the exertion of a non-conservative force)‚ potential energy _________________ (increases‚ decreases) and electric potential ______________ (increases
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Sakib Khan Electric Eels – Physics The animal that is usually known as electric eel is in fact not really an eel but a freshwater species related more to the carp family or catfish family. These unique freshwater predators got their name from the immense electrical charge that they can easily generate to stun or even kill their preys and dissuade predators. Electric eels can grow extremely large which usually can reach as high as 8 foot long and weigh a great amount of 45lbs. In addition to this
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