Chapter 20, Problem 40P

It is known that the voltage drop across an inductor follows Faraday's law:

$V_L=L\frac{di}{dt}$

where $V_L$ is the voltage drop (in volts), L is inductance (in henrys; $\text{1H}\text{=}\text{1V}\text{.s/A}$), and i is current (in amperes). Employ the following data to estimate L:

$di\text{/}dt,A\text{/}s$	1	2	4	6	8	10
$V_L,V$	5.5	12.5	17.5	32	38	49

What is the meaning, if any, of the intercept of the regression equation derived from these data?