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The Power in Watts for a Circuit Is Given by P

Question 16

Multiple Choice

The power in watts for a circuit is given by P = I 2R. How fast is the power changing if the resistance, R, of the circuit is 1,400 Ω\Omega , the current, I, is 1.5A, and the current is decreasing with respect to time at a rate of 0.025 A/s. (Assume R is a constant.)


A) 105 w/s
B) 4,200 w/s
C) 26.25 w/s
D) 157.5 w/s
E) -105 w/s

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