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Module 3. Electrical fundamentals

An AC inductive circuit has an inductance of 10 mH and a frequency input of 1000Hz. The opposition to current flow is approximately

  • 63,000 ohms.
  • 63 ohms.
  • 630 ohms.

Explanation

The opposition of an inductor to AC is its inductive reactance, XL = 2pifL. Here XL = 2pi * 1000 * 0.01 = 62.8 ~ 63 ohms. The 63,000-ohm answer comes from forgetting to convert millihenries to henries, and 630 ohms from a factor-of-ten slip.

bennguli asking:

KINDLY someone explain to me

Community Comments (2)

L
LugVonMises Posts: 3 09.05.2018 / 16:50
You have to use this formula:
XL=2 pi f L
L
LugVonMises Posts: 3 09.05.2018 / 16:51
So 6,28 x 10^3 x 10^-2= 62,8, so 63 omhs

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