An electric bulb has a rated power of 
at 
. If it is used on an a.c. source 
, 
, a choke has to be used in series with it. This choke should have an inductance of
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Resistance of bulb 
Current through bulb 
Choke of inductive reactance 
and resistance of the bulb 
are in series.
, where 
or 
or 
or 
henry
Inductance 
of choke 
.
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