A conducting bar with mass m and length L slides over horizontal rails that are connected to a voltage source. The voltage source maintains a constant current I in the rails and bar, and a constant, uniform, vertical magnetic field B fills the region between the rails.
Part A
Find the magnitude of the net force on the conducting bar. Ignore friction, air resistance, and electrical resistance.
Express your answer in terms of the variables I, L, and B.
F=
Part B
What is the direction of the net force?
to the right
to the left
Part C
If the bar has mass m, find the distance d that the bar must move along the rails from rest to attain speed v.
Express your answer in terms of the variables I, L, v, m, and B.
d=
Part D
Express your answer in meters.
d= m
A conducting bar with mass m and length L slides over horizontal rails that are connected to a voltage source. The voltage source maintains a constant current I in the rails and bar, and a constant, uniform, vertical magnetic field B fills the region between the rails (see Figure 1).
Express your answer in terms of the variables I and B.
Part A
What is the direction of the net force?
to the right
to the left
Part C
Express your answer in terms of the variables I, L, v, m, and B.
Part D
UnbH
It has been