The self-inductance $L$ of a solenoid of length $l$ and area of cross-section $A$ increases . . . . . . (Here with a fixed number of turns $N$).
- A$l$ increases and $A$ decreases.
- B$l$ decreases and $A$ increases.
- C$l$ and $A$ increase.
- DBoth $l$ and $A$ decrease.
Explore More
Similar Questions
If $N$ is the number of turns in a coil,the value of self-inductance varies as
MediumAIPMT 1993
View SolutionThe self-induced $emf$ of a coil is $25\,V$. When the current in it is changed at a uniform rate from $10\,A$ to $25\,A$ in $1\,s$,the change in the energy stored in the inductor is......$J$.
DifficultJEE MAIN 2019
View SolutionTwo different coils have self-inductance $8 \ mH$ and $2 \ mH$. The current in both coils is increased at the same constant rate. The ratio of the induced $emf$s in the coils is
DifficultMHT CET 2012
View SolutionWhen the current in a coil changes from $8 \ A$ to $2 \ A$ in $3 \times 10^{-3} \ s$,the induced $e.m.f.$ in the coil is $2 \ V$. The self-inductance of the coil in millihenry $(mH)$ is:
Easy
View SolutionCalculate the self-inductance of a very long solenoid.
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo