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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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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________________________ 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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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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CHAPTER - 13 MAGNETIC EFFECTS OF ELECTRIC CURRENT 1) Magnetic field and Field lines:- a) Magnetic field :- The region around a magnet where the force of attraction or repulsion can be detected is called magnetic field. Magnetic field around a magnet can be detected by using a magnetic compass. b) Magnetic field lines:- Magnetic field lines are the paths around a magnet along which the north pole of a magnetic compass needle tends to move. The magnetic field lines around
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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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The electric current For ball mill alicey023 The working efficiency directly affects the concentrator economic benefits of the beneficiation factories. Therefore improve the efficiency of the mill is very important. Generally speaking‚ the factors restricting the improvement of the efficiency as following: 1. The electric current For ball mill‚ enlarging the current is to increase the rotate speed. If the has high rotate speed‚ its work efficiency will be high. However‚ there is one notice:
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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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