A 320 H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value?
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Question context
This question is part of ⚡ Electrical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.