A source of e.m.f. 12 V and internal resistance 1 Ω drives a 5 Ω load. The power delivered to the load is:

  1. 20 W
  2. 40 W
  3. 200 W
  4. 10 W
Answer

A) 20 W

I = 126 = 2 A; P = I^2R = 20 W. SLO P-09-E-26 · Understanding

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