A conducting bar of length { moves to the right on two frictionless rails, as shown in the figure below. A uniform magnetic field directed into the page has a magnitude of 0.31 T. Assume { = 32 cm and R = 8.8 N. Bn Fapp (a) At what constant speed should the bar move to produce an 8.6 mA current in the resistor? m/s What is the direction of this induced current? O clockwise O counterclockwise O into the screen O out of the screen (b) At what rate is energy delivered to the resistor? mw (c) Explain the origin of the energy being delivered to the resistor.
A conducting bar of length { moves to the right on two frictionless rails, as shown in the figure below. A uniform magnetic field directed into the page has a magnitude of 0.31 T. Assume { = 32 cm and R = 8.8 N. Bn Fapp (a) At what constant speed should the bar move to produce an 8.6 mA current in the resistor? m/s What is the direction of this induced current? O clockwise O counterclockwise O into the screen O out of the screen (b) At what rate is energy delivered to the resistor? mw (c) Explain the origin of the energy being delivered to the resistor.
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![A conducting bar of length \( l \) moves to the right on two frictionless rails, as shown in the figure. A uniform magnetic field directed into the page has a magnitude of \( 0.31 \, \text{T} \). Assume \( l = 32 \, \text{cm} \) and \( R = 8.8 \, \Omega \).
**Diagram Explanation:**
- The diagram shows a conducting bar moving to the right.
- \( R \) represents a resistor connected to the rails.
- \( \vec{B}_{in} \) indicates the magnetic field directed into the page, represented by crosses.
- \( \vec{F}_{app} \) indicates the applied force moving the bar to the right.
- The current \( i \) flows counterclockwise along the loop formed by the rails and bar.
### Questions:
**(a) At what constant speed should the bar move to produce an \( 8.6 \, \text{mA} \) current in the resistor?**
[ ] m/s
What is the direction of this induced current?
- [ ] clockwise
- [ ] counterclockwise
- [ ] into the screen
- [ ] out of the screen
**(b) At what rate is energy delivered to the resistor?**
[ ] mW
**(c) Explain the origin of the energy being delivered to the resistor.**
[Answer here]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F021773a5-30bf-4026-94da-b5b931a87d69%2F5b403a69-b318-4470-814a-6fb92e7532bc%2Fc4shthm_processed.png&w=3840&q=75)
Transcribed Image Text:A conducting bar of length \( l \) moves to the right on two frictionless rails, as shown in the figure. A uniform magnetic field directed into the page has a magnitude of \( 0.31 \, \text{T} \). Assume \( l = 32 \, \text{cm} \) and \( R = 8.8 \, \Omega \).
**Diagram Explanation:**
- The diagram shows a conducting bar moving to the right.
- \( R \) represents a resistor connected to the rails.
- \( \vec{B}_{in} \) indicates the magnetic field directed into the page, represented by crosses.
- \( \vec{F}_{app} \) indicates the applied force moving the bar to the right.
- The current \( i \) flows counterclockwise along the loop formed by the rails and bar.
### Questions:
**(a) At what constant speed should the bar move to produce an \( 8.6 \, \text{mA} \) current in the resistor?**
[ ] m/s
What is the direction of this induced current?
- [ ] clockwise
- [ ] counterclockwise
- [ ] into the screen
- [ ] out of the screen
**(b) At what rate is energy delivered to the resistor?**
[ ] mW
**(c) Explain the origin of the energy being delivered to the resistor.**
[Answer here]
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