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A DC control coil has 48 volts across a winding with 120 ohms resistance. What current does it draw at steady state?

Texas Journeyman exam practice question · Controls & Disconnecting Means

A DC control coil has 48 volts across a winding with 120 ohms resistance. What current does it draw at steady state?

  • 0.40 ampere
  • B5.76 amperes
  • C2.50 amperes
  • D0.20 ampere

Where to look it up

Explicit exercise assumptions; not a universal code requirement.

Why A is correct

At DC steady state, I = V/R = 48/120 = 0.40 ampere. An AC coil or switching transient requires a different model.

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