Deep Dive: G5B02
The correct answer is C: It equals the sum of the currents through each branch. How the total current relates to the individual currents in a circuit of parallel resistors is that it equals the sum of the currents through each branch. In parallel circuits, total current is the sum of branch currents. For amateur radio operators, this is a fundamental circuit principle. Understanding this helps when analyzing parallel circuits.
Why Other Answers Are Wrong
Option A: Incorrect. Total current isn't the average - it's the sum. Average would be sum divided by number of branches, not the total. Option B: Incorrect. Total current doesn't decrease as more branches are added - it increases. More parallel branches mean more total current. Option D: Incorrect. Total current isn't the sum of reciprocal voltage drops - that's not how parallel circuits work. Current is the sum, not reciprocal voltage drops.
Exam Tip
Parallel resistors total current = sum of branch currents. Think 'P'arallel 'C'urrent = 'P'lus all 'C'urrents. In parallel circuits, total current equals the sum of currents through each branch. Not average, not decreases, not reciprocal voltage - just sum.
Memory Aid
Parallel resistors total current = sum of branch currents. Think 'P'arallel 'C'urrent = 'P'lus all 'C'urrents. Total current equals the sum of currents through each branch. Fundamental parallel circuit principle.
Real-World Example
Three resistors in parallel: Branch 1 has 2 amps, Branch 2 has 3 amps, Branch 3 has 1 amp. Total current = 2 + 3 + 1 = 6 amps. In parallel circuits, total current is the sum of all branch currents. This is Kirchhoff's current law.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G5B
Reference: 2023-2027 Question Pool · G5 - Electrical Principles
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G5B topic.