JEE Main 2020 · 7 January · evening · Single correct · +4 / −1

An emf of 20 V is applied at time t = 0 to a circuit containing in series 10 mH inductor and 5 Ω resistor. The ratio of the currents at time t = ∞ and at t = 40 s is close to : (Take e² = 7.389)

  1. (a) 1.06
  2. (b) 0.84
  3. (c) 1.15
  4. (d) 1.46
Answer and solution

Answer (a) 1.06

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Asked about 120 times in JEE Main since 2020. This question is from 2020.