Everything is clear and understood, I only don't understand why he added only in the second question and did not add it in the first question
Also, what he meant by "If the meter resistance is much greater than the element's resistance, the current through the meter will be negligible"
Source:
The Electrical Engineer’s Guide to Passing The Power PE Exam
by A. S. Graffeo, P.E.
PowerPE, LLC.
July 2016 Printing
ISBN: 978-0-9881876-1-0