CBSE Class 12-science Answered
Answer the following question:
Asked by nkrbasak | 09 Aug, 2012, 09:41: PM
Expert Answer
Mathematically we can answer the question as:
emf induced in an inductor is: -Ldi/dt thus if
i = I sinwt
then emf induced will be -Lw coswt = Lw sin(pi/2 + wt)
Thus current lags behind emf by pi/2
also physically it can be understood as:
According to lenz's law, the emf induced will be so as to compensate the change in current.
Thusas the current in the coil increses the emf across it decreases, thus the current lags by a phase difference of pi/2
Answered by | 09 Aug, 2012, 10:12: PM
Concept Videos
CBSE 12-science - Physics
Asked by divyanshsahu109 | 11 Mar, 2024, 05:57: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by paresh0311 | 06 Mar, 2023, 04:42: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by akhilverma471001 | 27 Dec, 2022, 10:14: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by arjunsah797 | 29 Mar, 2022, 07:25: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by arjunsah797 | 27 Mar, 2022, 08:00: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by saivardhanreddy15022003 | 11 Mar, 2022, 06:47: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by sky11841 | 08 Sep, 2021, 10:04: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mohitverma1017sn | 30 Dec, 2020, 08:57: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by a_k_garg | 11 Oct, 2020, 10:38: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by rishicool0205 | 19 Aug, 2020, 02:20: PM
ANSWERED BY EXPERT