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 ln 5 = 1.6]

A coil of self-inductance 10 mH and resistance 0.1 Ω is connected th

1.	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 ln 5 = 1.6]
A.	0.324 s
B.	0.103 s
C.	0.002 s
D.	0.016 s
Answer» E.

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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 ln 5 = 1.6]

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