Engineering Board Exam Reviewer · Parallel Circuits · medium

In the parallel circuit shown, V=18 V, R1=20, , and R2=5, . How much power is dissipated by R2?

  1. 64.8 W
  2. 81 W
  3. 12.96 W
  4. 129.6 W

Answer

A. 64.8 W

Solution

P=V2/R2= (18 V)25, =64.8 W.

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