🔍 Key Concepts

• Understand that the left side of the arc scale is labeled in megohms and the right side is labeled in thousand ohms (kΩ). • Notice how the numbers change as you move along the left side: Infinity → 200 → 100 → 50 → 30 → 20 → 15 → 10… megohms. • Pay attention to where mark 1 on the bottom scale lines up with the megohm graduations on the upper arc.

💭 Think About

• Is mark 1 closer to the megohm part of the scale or the thousand ohms part of the scale? • Looking at the spacing between 100, 150, and 200 on the megohm side, what approximate value does the pointer at 1 correspond to? • Compare each answer choice’s unit (ohms, thousand ohms, megohms) with the units shown where the 1-mark projects to on the arc.

✅ Before You Answer

• Confirm whether the pointer at 1 is reading in megohms or in thousand ohms before doing anything else. • Estimate between which two megohm graduations the 1-mark falls and approximate the value from the scale spacing. • Eliminate any choices that have the wrong unit for the part of the scale where 1 is located (plain ohms vs thousand ohms vs megohms).