Exercise 1: Circuit Comparison The circuits shown below are all constructed usin

Question

Exercise 1: Circuit Comparison

The circuits shown below are all constructed using identical bulbs of resistance R and ideal

batteries of EMF ?. Assume for simplicity that the resistance of a bulb does not depend on the

temperature of its filament (in reality, of course, it does depend upon this). Assume that the

brightness of the bulb is directly proportional to the power it dissipates.

For each question, be sure to defend our ranking with physical reasoning or a calculation.

Q1. Rank the circuits in order of increasing equivalent resistance. (It wouldn

Explanation / Answer

1)A>D>B>C

2)C>D>B>A

3)C>D>B>A

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