---
title: Potential Difference of Rod
topic: Magnetism
author: Ava Cornell
source: 2.13.42
template_version: 1.1
attribution: openstax-physics-vol2
showCorrectAnswer: false
outcomes:
- 19.8.4.0
difficulty:
- undefined
randomization:
- undefined
taxonomy:
- undefined
tags:
- OSUP
- volume 2
- chapter 13
- problem 42
- electromagnetic induction
- multi-part
- numeric
- AC
assets:
- Fig13_42.png
part1:
type: number-input
pl-customizations:
rtol: 0.05
weight: 1
allow-blank: false
label: ${\Delta}V= $
suffix: $\rm\ V$
show-help-text: true
part2:
type: dropdown
pl-customizations:
weight: 1
blank: true
myst:
substitutions:
params:
vars:
title: Potential Difference of Rod
B: '0.50'
v: '4'
part2:
ans1:
value: Bottom
ans2:
value: Top
---
# {{ params.vars.title }}
The rod shown in the accompanying figure is moving through a uniform magnetic field of strength ${{params.B }} \textrm{ T}$ with a constant velocity of magnitude ${{params.v }} \textrm{ m/s}$.
## Part 1
What is the potential difference between the ends of the rod?
### Answer Section
Please enter a numeric value.
## Part 2
Which end of the rod is at a higher potential?
### Answer Section
- {{ params.part2.ans1.value }}
- {{ params.part2.ans2.value }}
## Attribution
Problem is from the [OpenStax University Physics Volume 2](https://openstax.org/details/books/university-physics-volume-2) textbook, licensed under the [CC-BY 4.0 license](https://creativecommons.org/licenses/by/4.0/).
