A coil has a time constant of 1 second

Posted on 2014-01-28 18:05:00 in Engineering by HANNAH D

A coil has a time constant of 1 second and an inductance of 8H. If the coil is connected to a 100 volts d.c. source, determine:

1. 
   the rate of rise of current at the instant of switching (ii) the steady value of the current and (iii) the time take for current to reach 60 % of the steady value of current.

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