Bottom Of The Iron Rod E Current example essay topic
448 words
PHY 2049 Faraday's Law 1) ABSTRACT: Relative motion between a magnetic field and a conductor are needed to create a voltage within the conductor. For current to flow the conductor must be a complete loop, if not the current will not flow. 2) THEORY: Faraday's Law (V = -N (Df / Dt) ) 3) PROCEDURE: A. A coil is connected to a galvanometer, completing the loop. A magnet is passed through the coil. B. A coil is connected to a galvanometer, completing the loop. Many magnets are passed through the coil. C. Two coils are placed end to end with an iron rod placed through them. One is connected to a galvanometer the other to a power supply.
The power supply is switched on and off. D. A large coil surrounding an iron rod is given a constant current. An aluminum ring with a slit to prevent complete current is placed over the rod. E. A large coil surrounding an iron rod is given a constant current. A complete aluminum ring is placed over it. F. A large coil surrounding an iron rod is given a constant current. A copper coil is placed over the rod, but is not a complete loop. The coil is then closed to complete the loop. 4) DATA AND RESULTS: A. As the magnet passed through the coil a voltage was generated. B. As many magnets passed through the coil a lower voltage was generated. C. As current is supplied to the coil a voltage is generated in the iron rod.
When the current is cut off there is no voltage created. D. Current could not flow through the gapped ring so it fell straight to the bottom of the iron rod. E. Current could flow through the complete ring so it was repelled off the iron rod upon placement. F. The coil that is not complete falls to the bottom of the iron rod but the complete coil is also repelled off the rod due to current flow. 5) INTERPRETATION: The experiment proved that relative motion between a magnet and conductor was able to create a voltage and that current must have a complete loop in order for it to flow, thus proving Faraday's Law. When a north pole of magnet is approaching the face of the coil, it becomes a north face by the induction of current in anticlockwise direction to oppose forward motion of the magnet. When the north pole of the magnet is receding the face of the coil becomes a south pole due to a clockwise induced current to oppose the backward motion..
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