A coil of inductance 1H and resistance 100 is connected to a battery of 6.V. 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 instant 15ms after the circuit is switched on. (Given In 2 = 0.693, e3/2 = 0.25)
A coil of inductance 1H and resistance 100 is connected to a battery of 6.V. 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 instant 15ms after the circuit is switched on. (Given In 2 = 0.693, e3/2 = 0.25)
Option 1 -
t = 10ms; U = 2mJ
Option 2 -
t = 10ms; U = 1mJ
Option 3 -
t = 7ms; U = 1mJ
Option 4 -
t = 7ms; U = 2mJ
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1 Answer
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Correct Option - 3
Detailed Solution:L = 1H, R = 100
So,
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