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JEE Main Physics Class 12 Alternating Currents Part 2 Questions

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Question : 58

Total: 75

A coil of inductance 1H and resistance 100Ω is connected to a battery of 6V. Determine approximately :
(a) The time elapsed before the current acquires half of its steady - state value.
(b) The energy stored in the magnetic field associated with the coil at an instant 15‌ms after the circuit is switched on. (Given ln‌2=0.693,e−3∕2=0.25 )

[29-Jul-2022-Shift-1]

t=10‌ms;U=2‌mJ
t=10‌ms;U=1‌mJ
t=7‌ms;U=1‌mJ
t=7‌ms;U=2‌mJ

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