A magnetic actuator contains a straight section of aluminium conductor. A 6.0 cm length of the conductor is inside a uniform magnetic field and is at right angles to the field.
The magnetic flux density is 0.25 T0.25\ \text{T}0.25 T. The actuator requires a magnetic force of 0.045 N.
Calculate the current in the conductor.
Use the equation
F=B×I×lF = B \times I \times lF=B×I×l