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Oersted's Effect - Apparatus
Description: This apparatus demonstrates the magnetic field created by a current in a wire. The compass needle in the center of the apparatus will align itself with the net magnetic field present.
Instructions: Connect the wires from the DC power supply (or 9V battery) to the apparatus such that current either flows through the apparatus in just one direction (straight wire effect) or returns to form a loop.
With the power supply off (or battery disconnected), rotate the apparatus so that the compass needle is approximately parallel to the apparatus current carrying rods. Then turn on the power supply to deflect the compass needle.
If using a power supply, only let the current flow for 1-2 seconds, or the power supply may trip.
Parts: Oersted's effect demo, power supply
Setup Time: 10 min
Quant. in Demo Room: 1
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