A bar magnet is held stationary while a circular loop of wire is moved toward the magnet at constant velocity at position A as in the figure below. The loop passes over the magnet at position B and moves away from the magnet at position C. (For the following questions, state the directions as if you were to the right of the magnet, watching the loop of wire move away from you.) B (a) Find the direction of the induced current in the loop using Lenz's law at position A. clockwise O counterclockwise O No current is induced. (b) Find the direction of the induced current in the loop using Lenz's law at position C. O clockwise O counterclockwise No current is induced. (c) What is the induced current in the loop at position B? (Position B has the center of the loop exactly at the midpoint of the bar magnet.) O clockwise O counterclockwise O No current is induced. Explain.

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**Induction and Lenz's Law: An Experiment**

A bar magnet is held stationary while a circular loop of wire is moved toward the magnet at constant velocity at position A, as illustrated below. The loop passes over the magnet at position B and moves away from the magnet at position C. For the following questions, state the directions as if you were to the right of the magnet, watching the loop of wire move away from you.

**Diagram Explanation:**
- The diagram shows a bar magnet with a north (N) and south (S) pole.
- Three positions (A, B, C) are marked with circular loops of wire.
- Arrows indicate the direction of motion: toward the magnet at A, over the center of the magnet at B, and away from the magnet at C.

**Questions:**

(a) Find the direction of the induced current in the loop using Lenz's law at position A.
- ☐ clockwise
- ☐ counterclockwise
- ☐ No current is induced.

(b) Find the direction of the induced current in the loop using Lenz's law at position C.
- ☐ clockwise
- ☐ counterclockwise
- ☐ No current is induced.

(c) What is the induced current in the loop at position B? (Position B has the center of the loop exactly at the midpoint of the bar magnet.)
- ☐ clockwise
- ☐ counterclockwise
- ☐ No current is induced.

Explain.
Transcribed Image Text:**Induction and Lenz's Law: An Experiment** A bar magnet is held stationary while a circular loop of wire is moved toward the magnet at constant velocity at position A, as illustrated below. The loop passes over the magnet at position B and moves away from the magnet at position C. For the following questions, state the directions as if you were to the right of the magnet, watching the loop of wire move away from you. **Diagram Explanation:** - The diagram shows a bar magnet with a north (N) and south (S) pole. - Three positions (A, B, C) are marked with circular loops of wire. - Arrows indicate the direction of motion: toward the magnet at A, over the center of the magnet at B, and away from the magnet at C. **Questions:** (a) Find the direction of the induced current in the loop using Lenz's law at position A. - ☐ clockwise - ☐ counterclockwise - ☐ No current is induced. (b) Find the direction of the induced current in the loop using Lenz's law at position C. - ☐ clockwise - ☐ counterclockwise - ☐ No current is induced. (c) What is the induced current in the loop at position B? (Position B has the center of the loop exactly at the midpoint of the bar magnet.) - ☐ clockwise - ☐ counterclockwise - ☐ No current is induced. Explain.
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