Question: How does the magnetic field strength generated by a long - straight, horizontally - oriented current - carrying wire depend on the current carried by

How does the magnetic field strength generated by a long-straight, horizontally-oriented current-carrying wire depend on the current carried by the wire, assuming a vertical position and a fixed horizontal position?
If the wire's current doubles, then the magnetic field strength also doubles
If the wire's current doubles, then the magnetic field strength halves
If the wire's current doubles, then the magnetic field strength is unchanged
If the wire's current doubles, then the magnetic field strength is quadrupled (4 times as much as before)
None of the above
How does the magnetic field strength generated by

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