Problem $3$: $(10\%$ of Assignment Value$)$

An inductor of inductance $0\mathrm{.}65$ H initially has current $450$ mA directed as shown. The current changes at a constant rate until the current is $247\mathrm{.}5$ mA but the direction of the current is reversed. This process takes $0\mathrm{.}11$ seconds. Points a and b are defined in the diagram. Treat the inductor as ideal $($i$.$e$.,$ no resistance$).$

Part $($a$)$

What is true of the voltages at point a and b while the current is changing?

The voltage at $($a$)$ is larger than the voltage at $($b$)$ the entire time.

$$ Correct!

Part $($b$)$

What is the magnitude of the EMF induced in the inductor while the current changes? Assume the current changes at a constant rate. Answer in volts.

${}_L=1\mathrm{.}200V$

Attempts Remain

Feedback: is $$vailable$.$

Part $($c$)$

What was the energy stored in the inductor when the current $450$ mA $?$ Answer in joules.

$U=$ J

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