Elementary Technical Mathematics

a. $10,000~V$ b. $5000 \ V.$
For the measurement $13,0\bar{0}0,000\ V$, we have a. The precision is $10,000~V$ (notice that the $\bar{0}$ is in the $10,000$ place). b. The greatest possible error is one-half the precision: $$0.5\cdot 10,000 \ V= 5000 \ V.$$