Problem: The figure shows a 21 cm long metal rod pulled along two frictionless, conducting rails at a constant speed of 3.0 m/s. The rails have negligible resistance but the rod has a resistance of 0.70 Ω. If the applied magnetic field is 1.4 T:a. What is the current induced in the rod?b. What is the magnitude of the force required to keep the rod moving at a constant speed?c. And what is the direction of this force?
FREE Expert Solution
Current induced in the rod:
Problem Details
The figure shows a 21 cm long metal rod pulled along two frictionless, conducting rails at a constant speed of 3.0 m/s. The rails have negligible resistance but the rod has a resistance of 0.70 Ω.
|
If the applied magnetic field is 1.4 T:
a. What is the current induced in the rod?
b. What is the magnitude of the force required to keep the rod moving at a constant speed?
c. And what is the direction of this force?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Magnetic Field Produced by Straight Currents concept. You can view video lessons to learn Magnetic Field Produced by Straight Currents. Or if you need more Magnetic Field Produced by Straight Currents practice, you can also practice Magnetic Field Produced by Straight Currents practice problems.