Electrical Engineering - Inductors - Discussion
Discussion Forum : Inductors - General Questions (Q.No. 19)
19.
A 320 
H coil is in series with a 3.3 k
resistor. How long does it take for current to build up to its full value?
H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value?0.48 s
0.48 ms
0.48 s
s48 s
Discussion:
13 comments Page 2 of 2.
Rrgiri said:
1 decade ago
How it s possible ? @Vikas time constant is R/L or R*L ?
Feliciano said:
1 decade ago
Time constant for an RL circuit is not R*L! It is instead L/R, which makes Time Constant equal to 5* (320u/3. 3K) = 0.4848.
Kirthikumar rao said:
1 decade ago
time constant T=(L/R)
to reach max current it will take appr 5T
time=5(320u/3.3k)
=0.48us
to reach max current it will take appr 5T
time=5(320u/3.3k)
=0.48us
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