A wire is at right angles to a uniform magnetic field and carries an electric current. The wire is 120 mm in length.
When the current in the wire is increased by 5.0 A, the force acting on the wire increases by 4.8 × 10-3 N.
What is the magnetic flux density of the field?
8.0×10−6 T8.0 \times 10^{-6}\text{ T}8.0×10−6 T
8.0×10−3 T8.0 \times 10^{-3}\text{ T}8.0×10−3 T
1.3×102 T1.3 \times 10^2\text{ T}1.3×102 T
1.3×105 T1.3 \times 10^5\text{ T}1.3×105 T