Alternating CurrentHard
Question
A coil of inductance 8.4 mH and resistance 6Ω is connected to 12 V battery. The current in the coil is 1 A at approximately the time
Options
A.500 s
B.20 s
C.35 ms
D.1 ms
Solution
The current-time (i-t) equation in L-R circuit is given by
[Growth of current in L-R circuit]
i = i0(1-e-t/tL) ........(i)
where
and
and
and i = 1A
t = ?
Substituting these values in Eq. (i), we get
t = 0.97 × 10-3s
or t = 0.97 ms
t
1 ms
[Growth of current in L-R circuit]
i = i0(1-e-t/tL) ........(i)
where
and
and
and i = 1A
t = ?
Substituting these values in Eq. (i), we get
t = 0.97 × 10-3s
or t = 0.97 ms
t
1 msCreate a free account to view solution
View Solution FreeMore Alternating Current Questions
The r.m.s value of potential difference V shown in the figure is...The r.m.s. value of alternating current is :...In the given circuit, the AC source has ω = 100 rad/s. Considering the inductor and capacitor to be ideal, the corr...An AC voltage is given by : E = E0 sin Then the mean value of voltage calculated over time interval of T/2 seconds :...A pure resistive circuit element X when connected to an AC supply of peak voltage 200 V gives a peak current of 5 A whic...