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A
It is different for each branch
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B
It is the same across each parallel branch
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C
It is always zero
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D
It decreases along the circuit
Why this is the answer
In a PARALLEL circuit, the VOLTAGE is the SAME across each parallel branch (each branch gets the full source voltage). ASVAB Electronics Information tests circuit types. PARALLEL CIRCUITS: same voltage across each branch; current divides among branches; total resistance is LESS than the smallest individual resistance; if one branch fails, others keep working. SERIES CIRCUITS: same current through all; voltage divides among components. Household wiring is parallel (so each outlet gets full voltage and devices work independently). Knowing voltage is equal across parallel branches is commonly tested.
Source: ASVAB Electronics Information — Parallel Circuits