GeneralG5B02
How does the total current relate to the individual currents in a circuit of parallel resistors?
C
Answer
Electrical principles
Type
A
It equals the average of the branch currents
B
It decreases as more parallel branches are added to the circuit
C
It equals the sum of the currents through each branch
D
It is the sum of the reciprocal of each individual voltage drop
Answer Notes
In a parallel circuit, the total current flowing from the source splits into the various parallel branches. According to Kirchhoff's Current Law, the total current entering a junction must equal the total current leaving it.
This means that if you measure the current flowing through each individual resistor in a parallel arrangement, the sum of those individual branch currents will exactly equal the total current supplied to the entire circuit.
While the voltage across each parallel branch remains the same, the current divides. Options suggesting the current decreases or equals the average of the branches fundamentally misunderstand how electrical charge is conserved as it flows through multiple parallel paths.
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