The change in deflection shows that there is a direct relationship between the current through the wire and the strength of the magnetic field produced. An increase in current leads to an increase in magnetic field strength.
What does the change in deflection of the needle reveal about the relationship between current and magnetic field strength?
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The change in deflection of the needle in response to a change in current reveals a direct relationship between the current in the conductor and the strength of the magnetic field produced. Specifically:
1.Increase in Current: If the current in the conductor is increased, the deflection of the compass needle also increases. This indicates that an increase in current results in a stronger magnetic field around the current-carrying conductor.
2. Decrease in Current: Conversely, if the current in the conductor is decreased, the deflection of the compass needle decreases. A decrease in current leads to a weaker magnetic field.
In summary, the deflection of the needle is a qualitative indicator of the strength of the magnetic field. The key takeaway is that the magnitude of the magnetic field produced at a given point increases with an increase in the current through the wire. This relationship is fundamental to the principles of electromagnetism and is crucial in various applications in physics and electrical engineering.