Final answer:
When power is removed from a parallel circuit, an ohmmeter can be used to measure the resistance across all branches. The resistance measured will be the combined resistance of all the branches.
Step-by-step explanation:
When power is removed from a parallel circuit and an ohmmeter is used to measure the resistance across all branches, the ohmmeter will measure the combined resistance of all the branches. This is because in a parallel circuit, the resistance of each branch is in parallel with each other, and when power is removed, the branches still remain connected in parallel. Therefore, the resistance measured by the ohmmeter will be the same as the combined resistance of all the branches.