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  3. Physics
  4. An electric bulb in series with a large inductor when connected across a DC source takes a little time before reaching a stable glow. If an iron core is inserted into the inductor the time delay of reaching stable glow will:

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Q. An electric bulb in series with a large inductor when connected across a $DC$ source takes a little time before reaching a stable glow. If an iron core is inserted into the inductor the time delay of reaching stable glow will:

J & K CETJ & K CET 2001

Solution:

Correct answer is (b) increase