A square loop is carrying a clockwise current as shown. The loop is placed in a uniform magnetic field (B-field) directed upward. Which of the following is TRUE regarding the direction of the magnetic force Fg on the top side of the loop (marked 90.0°)? 90.0% AB I Fe is directed into the page/screen (x). Fe is directed to the right. Fa is directed to the left. Fe is directed out of the page/screen (). FB is directed downward. F is directed upward.

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### Magnetic Force on a Current-Carrying Loop

**Problem Statement:**
A square loop is carrying a clockwise current as shown in the diagram below. The loop is placed in a uniform magnetic field (B-field) directed upward. Which of the following is TRUE regarding the direction of the magnetic force \( F_B \) on the top side of the loop (marked 90.0°)?

**Diagram Explanation:**

1. **Square Loop:**
   - A square loop is shown with sides enclosed in a clockwise direction with an electric current (denoted by \( I \)).
   
2. **Uniform Magnetic Field:**
   - An upward magnetic field is represented with arrows pointing upward and labeled as \( \vec{B} \).
   
3. **Top Side of the Loop:**
   - The top side of the loop is marked with an angle of 90.0° to indicate its position relative to the magnetic field direction.

**Answer Options:**
- \( F_B \) is directed into the page/screen (x).
- \( F_B \) is directed to the right.
- \( F_B \) is directed to the left.
- \( F_B \) is directed out of the page/screen (\(\otimes\)).
- \( F_B \) is directed downward.
- \( F_B \) is directed upward.

To find the direction of the magnetic force \( F_B \), the right-hand rule is used: Point the thumb in the direction of the current and fingers in the direction of the magnetic field. The force direction is given by the palm’s push direction.

---

By following the right-hand rule for the top side of the loop carrying the clockwise current in the upward magnetic field, it is concluded that \( F_B \) is directed into the page/screen (x).
Transcribed Image Text:### Magnetic Force on a Current-Carrying Loop **Problem Statement:** A square loop is carrying a clockwise current as shown in the diagram below. The loop is placed in a uniform magnetic field (B-field) directed upward. Which of the following is TRUE regarding the direction of the magnetic force \( F_B \) on the top side of the loop (marked 90.0°)? **Diagram Explanation:** 1. **Square Loop:** - A square loop is shown with sides enclosed in a clockwise direction with an electric current (denoted by \( I \)). 2. **Uniform Magnetic Field:** - An upward magnetic field is represented with arrows pointing upward and labeled as \( \vec{B} \). 3. **Top Side of the Loop:** - The top side of the loop is marked with an angle of 90.0° to indicate its position relative to the magnetic field direction. **Answer Options:** - \( F_B \) is directed into the page/screen (x). - \( F_B \) is directed to the right. - \( F_B \) is directed to the left. - \( F_B \) is directed out of the page/screen (\(\otimes\)). - \( F_B \) is directed downward. - \( F_B \) is directed upward. To find the direction of the magnetic force \( F_B \), the right-hand rule is used: Point the thumb in the direction of the current and fingers in the direction of the magnetic field. The force direction is given by the palm’s push direction. --- By following the right-hand rule for the top side of the loop carrying the clockwise current in the upward magnetic field, it is concluded that \( F_B \) is directed into the page/screen (x).
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