Physics > Lab Report > New York University PHYSICS 2 Lab 8-GRADED A (All)
Objective/Procedure It was previously known that a moving current causes a magnetic field. The phenomenon of electromagnetic induction was discovered when there was an attempt to generate current by... the use of a steady magnetic field. In the end, it was discovered that a time changing magnetic field will induce the flow of current but not a steady magnetic field. The goal of this experiment was to attempt to induce a current in wire by a variety of ways: moving a permanent magnet near a wire, moving a current carrying coil (with it’s own magnetic field) near a wire and also changing the current in the second coil while it remains stationary. All of the above described methods would produce a change in flux that in theory should induce a current to flow. Theory Current induction is based on a change in magnetic flux. Magnetic flux is the measurement of the total magnetic field which passes through a given area, given by the integral of the magnetic field that is passing through a differential area. Only the component of the magnetic field that is perpendicular to the area contributes to the flux. According to Faraday’s Law, the EMF (induced voltage) is negative the change in the magnetic flux with respect to time. The induced voltage is created by a non-conservative electric field and this will give rise to a current. The magnitude of the voltage across a coil will also depend on the number of turns in the coil. Data and Calculations See attached Graphs [Show More]
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