Question

Part A
A 270-m length of wire stretches between two towers and carries a 145-A current. Determine the magnitude of the force on the wire due to the Earth’s magnetic field of 5.0 ×10−5Twhich makes an angle of 64 ∘ with the wire.
Express your answer to two significant figures and include the appropriate units.

F =

Answer 1

magnitude of the force on the wire   = I * (L X B)

                                                           =    145 * (270 * 5.0 ×10⁻⁵ * sin64)

                                                             =    1.759   N