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Electromagnetic Induction question

2018 · Shift 1 · Q44
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  5. /2018 · Shift 1 · Q44

Electromagnetic Induction question

2018 · Shift 1 · Q44

JEE AdvancedPhysicsElectromagnetic InductionMultiple correct+4 / −1
In the figure below, the switches S1{S_1}S1​ and S2{S_2}S2​ are closed simultaneously at t=0t=0t=0 and a current starts to flow in the circuit. Both the batteries have the same magnitude of the electromotive force (emf) and the polarities are as indicated in the figure. Ignore mutual inductance between the inductors. The current III in the middle wire reaches its maximum magnitude Imax⁡{I_{\max }}Imax​ at time t=τt = \taut=τ . Which of the following statements is (are) true? JEE Advanced 2018 Paper 1 Offline Physics - Electromagnetic Induction Question 18 English
  1. A
    Imax⁡=V2R{I_{\max }} = {V \over {2R}}Imax​=2RV​
  2. B
    Imax=V4R{I_{max}} = {V \over {4R}}Imax​=4RV​
  3. C
    τ=LRln⁡2\tau = {L \over R}\ln 2τ=RL​ln2
  4. D
    τ=2LRln⁡2\tau = {{2L} \over R}\ln 2τ=R2L​ln2
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