- #1

christang_1023

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- Homework Statement
- 1. Is Lenz's law applied only when there is a closed loop?

2. When a ring in a changing magnetic field is not complete (i.e. open circuit with a small gap), how to analyze the emf of the ring?

- Relevant Equations
- Shown below

Above is an example figure.

**2. When a ring in a changing magnetic field is not complete (i.e. open circuit with a small gap), how to analyze the emf of the ring?**

According to the general form of Faraday's law, ## \oint \vec{E} \cdot d \vec{s} = -\frac{d \Phi}{dt} ##, I deduce that although it is not a closed loop, there is still emf within the incomplete ring conductor. How can I derive the emf of this ring?