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1. You are given a number of 32 Ω resistors, each capable of dissipating only 2.5...

1. You are given a number of 32 Ω resistors, each capable of dissipating only 2.5 W without being destroyed. What is the minimum number of such resistors that you need to combine in series or in parallel to make a 32 Ω resistance that is capable of dissipating at least 12.5 W?

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Answer #1

In order to find the number of resistance needed we have to know that in series the equivalent resistance is R=R1+R2+R3....

In parallel , 1/R =1/R1+1/R2+...

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