A 8N force acts on a rectangular conductor 20 cm long placed perpendicular
to a magnetic field. Determine the magnetic field induction if the current in the conductor is 40 A.
Force on conductor F = 8N
Length of conductor l = 20 cm = 20/100 m
Current in the conductor I = 40 A
Magnetic field induction B = ?
F = BIl
B = 8 X 100/40 X 20 = 1 tesla