Plan and conduct an investigation to provide evidence that an electric current can produce a magnetic field and that a changing magnetic field can produce an electric current.
Adjust the battery voltage to push current through the coil. Observe the compass needle.
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Drag the permanent magnet near or through the coil. Observe the ammeter.
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Planning and Carrying Out Investigations: Use this sandbox to gather empirical data. In Tab 1, observe how voltage and loop count affect magnetic field strength. In Tab 2, investigate how the speed and direction of a moving magnet induce different currents.
PS2.B & PS3.A: Forces at a distance are explained by fields. Electric currents cause magnetic fields (Electromagnets). Conversely, changing magnetic fields cause electric fields, inducing a current in a wire (Faraday's Law).
Cause and Effect: Empirical evidence shows specific causes and effects. A stationary magnet (cause) produces no current (effect). A moving magnet (cause) induces a current (effect). Reversing the motion reverses the current.