A coil has $430$ turns and self$-$inductance $7\mathrm{.}50$ mHmH$.$ The current in the coil varies with time according to i$=(680$mA$)$cos$[$t$/(0\mathrm{.}0250$s$)]$i$=(680$mA$)$cos$[$t$/(0\mathrm{.}0250$s$)].$

Part A

What is the maximum emf induced in the coil?

Express your answer with the appropriate units.

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EmaxEmax $=$

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Part B

What is the maximum average flux through each turn of the coil?

Express your answer in microwebers.

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$$Bmax$$Bmax $=$

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WbWb

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Part C

At t$=0\mathrm{.}0180$t$=0\mathrm{.}0180$ ss$,$ what is the magnitude of the induced emf?

Express your answer with the appropriate units.

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EE $=$

nothingnothing

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