Exercises: Parallel Circuits

Work through each section in order. Show all steps: find R_eq, then branch currents, then verify with KCL.

Grade 11·21 problems·~30 min·OpenStax Physics (High School)·section·sec-19-3

Work through problems with immediate feedback

Fluency Practice

Which of the following must always be true for the equivalent resistance of any parallel combination of resistors?

The equivalent resistance is less than the smallest individual resistor.

The equivalent resistance equals the average of the individual resistances.

The equivalent resistance increases as more resistors are added in parallel.

The equivalent resistance equals the sum of the reciprocals of each resistance.