Engineering Board Exam Reviewer · Parallel Circuits · medium

In the parallel circuit shown, V=48 V, R1=60, , R2=30, , and R3=20, . Find the current through R2.

  1. 4.8 A
  2. 1.6 A
  3. 0.44 A
  4. 2.4 A

Answer

B. 1.6 A

Solution

Each parallel branch has the full source voltage across it, so I2=V/R2= 48 V30, =1.6 A.

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