which factors affect the strength of a magnetic field around a current - carrying wire? check all that…

which factors affect the strength of a magnetic field around a current - carrying wire? check all that apply. the type of metal of the wire the amount of the current the direction of the current the temperature of the wire the distance from the wire
Answer
Brief Explanations:
The strength of the magnetic field around a current - carrying wire is given by Ampere's law. The magnetic field strength $B$ is proportional to the current $I$ and inversely proportional to the distance $r$ from the wire ($B=\frac{\mu_0I}{2\pi r}$, where $\mu_0$ is the permeability of free space). The type of metal, direction of current, and temperature of the wire do not directly affect the magnitude of the magnetic field strength (the direction of the current affects the direction of the magnetic field, not its strength).
Answer:
the amount of the current, the distance from the wire