Find all excluded values for the expression. That is, find all values of $v$ for which the expression is undefined. \[ \frac{v-5}{v-10} \] If there is more than one value, separate them with commas. \[ v= \]

Step 1 ：The expression is undefined when the denominator equals zero. Therefore, we need to find the value of \(v\) that makes \(v-10=0\).

Step 2 ：Solving for \(v\) in the equation \(v-10=0\) gives us \(v=10\).

Step 3 ：Final Answer: The excluded value for the expression is \(\boxed{10}\).