# Moving charge to define magnetic field

1. Why charged particle has to be in motion to define magnetic field?
2. Will magnetic force exert any force on a static charge? (as in the static test charge in electric field)
3. A line from my book reads-
"If a magnetic monopole (individual magnetic charge) were available, we could define magnetic field B in a similar way as electric field."
What would be similar to magnetic field and electric field if individual magnetic charges actually existed?
• Number $2$ is ambiguous - at best, it's implied by $3$. But I vote for the @danielunderwood comment. – Cinaed Simson Nov 16 '19 at 8:51