9:51 AM my.pennfoster.com i AT&T; 52% . My Courses Video Resources Help Cente Ex
ID: 2248345 • Letter: 9
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9:51 AM my.pennfoster.com i AT&T; 52% . My Courses Video Resources Help Cente Examination Number 086009RR Inductors in AC Circuits This exam is now available only in the online assessment system. If your study exam is no longer valid. You must complete the online version of this exam. Click Next or Back to navigate through the exam. If you want to skip a questio click the Mark for review checkbox to highlight the question on the review pag At any time, you can click Review Answer Selections to go to the review pag number to return to the exam. You can also cancel the exam or submit it for co Click Exit Without Submitting to exit the exam. The work you've done so far Question 10 of 25:Select the best answer for the question. Mark for review (V 10. What is the time constant of a 20 mH inductor in series with a 230 resistor? OA. 86.96 us OB, 900 ms Oc. 86.96 s OD.o.09 s Copyright & Terms Privacy Policy TermsExplanation / Answer
10. Time constant of a series LR circuit is: = L/R.Here L= 20mH=(20/(1000))H=0.020H
And R =230 ohm
=> = 0.02/230
=86.96×10-6
=86.96µs
Hence option (a) is correct
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