El Experimento de Oersted (Ørsted). EXPERIMENTO
Oersted's Experiment: Relationship between Electricity and Magnetism
This section introduces Oersted's experiment, which demonstrated the relationship between electricity and magnetism. The necessary materials for the experiment are listed.
Setting up Oersted's Experiment
- To repeat Oersted's experiment, the following materials are needed:
- A cable
- An electric cable
- A compass
- Place the compass underneath the wire, parallel to its needle.
- Connect a 9-volt battery to the circuit using a connector.
- When the circuit is closed, observe that the magnetic needle of the compass is deflected due to the magnetic field generated by the electricity flowing through the conductor.
Changing Needle Deflection
- If the compass is placed on top of the wire instead of below it, the needle deflection will occur in the opposite direction.
- Changing the polarity or direction of current also changes how it deflects the needle.
Safety Precautions
- Avoid keeping the battery shorted for too long as it can heat up and even burn.
Building a Compass
This section explains how to build a homemade compass using simple materials.
Building a Homemade Compass
- Take a cork and cut a slice from it.
- Cross this slice with a needle.
- Magnetize one end of the needle by rubbing it several times with a magnet.
- Place this homemade compass in a small bowl filled with water so that it floats.
Demonstrating Needle Deflection with Homemade Compass
This section demonstrates how to use the homemade compass to observe needle deflection in Oersted's experiment.
Observing Needle Deflection
- Place the cable above the homemade compass and connect it to complete the circuit.
- Observe how the needle of the homemade compass is deflected when the circuit is closed.
Reversing Needle Deflection
- Mount the compass above the cable instead.
- When closing the circuit, observe that the needle deflects in the opposite direction.
Significance of Oersted's Experiment
This section highlights the significance of Oersted's experiment and its impact on scientific understanding.
The Beginning of a Revolution
- Oersted's seemingly simple experiment marked the beginning of a revolution in our understanding of electricity and magnetism.