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where
τ
L
=
L
/
R
is the inductive time constant and
ε
is the battery emf. To calculate the
time at which
i
= 0.9990
/
R
, we solve for t:
() ()
(
)
/
0.990
1
ln 0.0010
/
/
6.91.
L
t
L
et
t
RR
ττ
−
=−
⇒
=
−
⇒
=
51. Starting with zero current at
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Current

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