Engineering Board Exam Reviewer · Parallel Circuits · easy

In the parallel circuit shown, V=72 V, R1=12, , and R2=4, . Find the current through R1.

  1. 24 A
  2. 4.5 A
  3. 6 A
  4. 18 A

Answer

C. 6 A

Solution

Each parallel branch has the full source voltage across it, so I1=V/R1= 72 V12, =6 A.

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