- #1
ninjadrummer8
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Homework Statement
This is one of those problems with a U-Shaped Conductor, but this time it is at an angle and the Earth's Magnetic Field is perpindicular to the plane of it. The rails are 10m apart and the conducting rod weights 10 kg. No friction on the ramps, and the only resistance is in the resistor at the bottom.
Question 1: What is the value of the resistance if the rod slides with constant speed 20m/s?
Question 2: What would happen to the rod if the resistance was a lot less than what I found?
Homework Equations
F=(B^2)(L^2)V / R
F=ma
The Attempt at a Solution
Answer 1:
B=5x10^-5 T
L=10m
V=20m/s
F=ma=10(9.8)=98 N
So I can just plug those in and solve for R, correct? Or am I not able to use these equations in this case?
Answer 2:
Lower R would mean Lower EMF, which would also mean lower velocity, is this correct? So I think the rod would fall slower?