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Alternating Current question

2019 · 10 Apr · Shift 2 · Q62
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  5. /2019 · 10 Apr · Shift 2 · Q62

Alternating Current question

2019 · 10 Apr · Shift 2 · Q62

JEE MainPhysicsAlternating CurrentMCQ+4 / −1
A coil of self inductance 10 mH and resistance 0.1 Ω\OmegaΩ is connected through a switch to a battery of internal resistance 0.9 Ω\OmegaΩ. After the switch is closed, the time taken for the current to attain 80% of the saturation value is: [take ln 5 = 1.6]
  1. A
    0.324 s
  2. B
    0.002 s
  3. C
    0.103 s
  4. D
    0.016 s
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