Engineering Board Exam Reviewer · Parallel Circuits · medium

In the parallel circuit shown, V=72 V, R1=12, , R2=6, , and R3=4, . How much power is dissipated by R1?

  1. 235.64 W
  2. 864 W
  3. 216 W
  4. 432 W

Answer

D. 432 W

Solution

P=V2/R1= (72 V)212, =432 W.

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