JEE Main 2019 Physics question

A coil of self inductance 10 mH and resistance 0.1 Ω is connected through a switch to a battery of internal resistance 0.9 Ω. After the switch is closed, the time taken for the current to attain 80% of the saturation value is: [take ]

• (A)0.324 s
• (B)0.002 s
• (C)0.103 s
• (D)0.016 sCorrect