Suppose a $55$ cm long, $11\mathrm{.}5$ cm diameter solenoid has $1000$ loops.

Holmes,$$Tim$-$trh$5605$@psu.edu

trh$5605$@psu.edu$0$P$65-85-39-40-$BD$61-52485$

$-$ Part $($a$)$

Calculate the self$-$inductance of it in mH$.$

L $=23\mathrm{.}7023\mathrm{.}70$Correct$!$

$-$ Part $($b$)$

How much energy is stored in this inductor when $18$ A of current flows through it$?$ Give your answer in J$.$