a. What is the approximate increase in size from a 1 W to a 2 W carbon resistor?b. What is...

a. What is the approximate increase in size from a 1 W to a 2 W carbon resistor?

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b. What is the approximate increase in size from a 1/2 W to a 2 W carbon resistor?

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c. In general, can we conclude that for the same type of resistor, an increase in wattage rating requires an increase in size (volume)? Is it almost a linear relationship? That is, does twice the wattage require an increase in size of 2:1?