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General Knowledge Sports Objective

May 20, 2013

A 3.3 k Ω resistor dissipates 0.25 W. The current is

Choose the correct answer:

A) 8.7 mA

B) 8.7 µA

C) 87 mA

D) 8.7 A

Detailed Explanation

W = I² R

I = square root(W/R)

= square root( 0.25/(3.3x1000) )

= 0.0087038828

= 8.7 mA

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