In a physics laboratory demonstration, a straight rigid wire of length 1.25 m is carrying a constant current. The wire is oriented at right angles to a uniform magnetic field.

• The magnetic force experienced by the wire is 0.45 N.
• The current passing through the wire is 0.60 A.

Calculate the magnetic flux density of the field.

Use the equation:

$$force=magnetic\; flux\; density\times current\times length$$