A collection of five unlabeled schematic symbols is listed below. Each symbol may be rotated from its most common orientation but retains its characteristic geometry.
Symbol 1: A simple rectangle.
Symbol 2: Two closely–spaced parallel lines of unequal length, arranged side-by-side.
Symbol 3: A circle containing the capital letter “A.”
Symbol 4: A pair of conductors that approach each other, cross without touching, and continue outward so that no electrical contact exists at the crossing point.
Symbol 5: A circle containing the capital letter “V.”
Answer the following questions about this set of symbols.
(1) Identify the circuit component represented by each symbol. Use standard AP Physics 2 terminology.
(2) For each component, describe its primary function when placed in a simple direct-current circuit. Your description should include how the element influences current, potential difference, or measurement within the circuit.
(3) Suppose Symbol 3 is rotated by 90° and Symbol 5 is scaled to half its original size. Explain whether these geometric changes affect the meaning of the symbols in a circuit diagram and justify your reasoning.
(4) Given a battery, a lightbulb modeled as a resistor, and the five symbols above, sketch (in standard schematic form) a closed single-loop circuit that will allow a student to measure both the current through and the potential difference across the lightbulb simultaneously. Clearly label all components and show their correct placement relative to the lightbulb.