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A 320 H coil is in series with a 3 3...

This question belongs to Electrical Engineering Electrical Inductors
Electrical Inductors
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A 320 µH coil is in series with a 3.3 kΩ resistor. How long does it take for current to build up to its full value?

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Correct Answer: Option C
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2 Comments
Engr Farman
Engr Farman 6 years ago
time constant T=(L/R)
to reach max current it will take appr 5T
time=5(320u/3.3k)
=0.48us
Kusheshwar Mandal
Kusheshwar Mandal 6 years ago
explane formula use kardo yar
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