A galvanometer G has an internal resistance rg. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the voltmeter? 
Definitions:
Variable Costing
A financial recording technique that factors in only direct materials, direct labor, and variable manufacturing overhead as part of the product's costing.
Total Gross Margin
The total amount of revenue a company retains after incurring the direct costs associated with producing the goods it sells and the services it provides.
Unit Product Cost
The total expense incurred to produce, manufacture, or acquire a product divided by the number of units.
Absorption Costing
An accounting technique that allocates all manufacturing costs to products, helping to capture the full cost of producing each item.
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