Physics help ! :)?

Im pretty good at physics but this topic confuses me ! It’s electromagnetism. I understand Flemings left hand rule okay enough but I’m stumped on what most people would find easy 1 markers ! 1- what do arrows on a magnetic field represents? 2-what effect would changing the direction of the current have on the... show more Im pretty good at physics but this topic confuses me ! It’s electromagnetism. I understand Flemings left hand rule okay enough but I’m stumped on what most people would find easy 1 markers !

1- what do arrows on a magnetic field represents?
2-what effect would changing the direction of the current have on the magnetic field ?
If anyone could help that would be fab ! :)
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