Suppose that an electric current flows in a straight wire. The current changes so that it flows in the opposite direction. What changes occur in the magnetic field, and what stays the same?
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the magnetic field will turn in the opposite direction around the straight wire
the strength of the magnetic field will stay the same as long as the amount of current renning through the wire remains the same
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The change in direction in electric current flow in a straight wire causes change in direction of the magnetic field:
- According to Bio-Savart's Law, the magnetic field is directly related to the direction of the current.
- If the direction of the flow of current changes the direction in the magnetic field changes.
- However, the strength of the magnetic field remains the unchanged since the current remains the same.
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