The force on a straight current-carrying wire in a magnetic field is proportional to the current in the wire, the strength of the field, and the of the wire. a) trueb) false

It is true

Explanation:

Force on a current carrying conductor placed in magnetic field is given by

F = B x i x l

where, B is the magnetic field strength, i be the current and l be the length of the conductor

So, the force depends on the magnetic field, current.