A. [P1 +P2 +P3] is greater than 10 W b. [P1 +P2 +P3] = 10 W C. [P1 +P2 +P3] is l

Question

A. [P1 +P2 +P3] is greater than 10 W

b. [P1 +P2 +P3] = 10 W

C. [P1 +P2 +P3] is less than 10 W

D. Need to know magnitudes of R1, R2, and R3 to answer this.

E. need to know battery voltage to answer this.

F. need to know battery voltage and magnitudes of each resistor to answer this.

the battery in this circuit supplie 10 J of energy per second. Let P1 represent the power dissipated in resistor R1, etc. which of the following statements is correct? [P1 +P2 +P3] is greater than 10 W [P1 +P2 +P3] = 10 W [P1 +P2 +P3] is less than 10 W Need to know magnitudes of R1, R2, and R3 to answer this. need to know battery voltage to answer this. need to know battery voltage and magnitudes of each resistor to answer this.

Explanation / Answer

P = I^2*R = 10 j

energy dissipated = P*t = I^2*R*t (here t=1)

= 10 joule

so b. [P1 +P2 +P3] = 10 W

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