Calculate the rate at which energy is used up in the circuit illustrated by the diagram

  • A 0 W
  • B 2 W
  • C 4 W
  • D 8 W
  • E 16 W
waec 1992physics

The correct answer is C. 4 W

R = R1R2/R1R2 = 1

E = I2R = 22 x 1 =4W

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