When 100 volt dc is applied across a coil, a current of 1 amp flows through it. When 100 volt ac at 50 cycle s-1 is applied to the same coil, only 0.5 ampere current flows. The impedance of the coil is
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
100 Ω
b
200 Ω
c
300 Ω
d
400 Ω
answer is B.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
When dc is supplied R=Vi=1001=100 Ω When ac is supplied Z=Vi=1000.5=200 Ω