🔍 Key Concepts
• Notice there are two overlapping scales on the megger: one in megohms (left side) and one in thousand ohms (right side).
• The bottom numbers 1–9 are just index marks; the actual resistance value comes from the scale directly above the radial line at that index.
• Remember that 1 megohm = 1,000,000 ohms, and 1000 ohms = 1 kilohm; you may need to convert between megohms and thousands of ohms to compare with the choices.
💭 Think About
• At mark "6", which scale (megohm or thousand‑ohm) is the problem asking you to read, and what unit do the answer choices mostly use?
• Look at the tick mark straight above the "6" index: what labeled value on the megohm scale is it closest to, and how does that compare to the labeled values on the thousand‑ohm scale at the same point?
• After you identify the approximate value at mark "6", convert it if needed so it matches the units in the answer choices, then decide which option is closest.
✅ Before You Answer
• Be sure you are reading from the correct scale (megohm scale, not thousand‑ohm scale) for this question.
• Confirm your unit conversions: 1 megohm = 1,000,000 ohms = 1000 kilohms = 1000 × 1000 ohms.
• Check that the numerical size you get (less than, about, or much greater than 1 megohm) is consistent with the relative position of mark "6" compared to marks for 2, 3, 5, etc. on the megohm scale.