Define the term 'stopping potential' in relation to photoelectric effect.

Explanation

**Step-by-Step Solution:**

1. **Definition of Stopping Potential**: Stopping potential, denoted as \( V_s \), is defined as the minimum negative potential applied to an electrode (anode) in a photoelectric experiment that is required to stop the flow of photoelectrons emitted from a metal surface.

2. **Relation to Photoelectric Effect**: In the context of the photoelectric effect, when light of sufficient frequency shines on a metal surface, it causes the emission of electrons. These emitted electrons can be collected at the anode, creating a photocurrent.

3. **Condition for Stopping Current**: The stopping potential is the value at which the kinetic energy of the emitted photoelectrons is countered by the electric potential energy due to the applied negative potential. When this potential is reached, the photocurrent ceases, meaning that no electrons can reach the anode.

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