In a purely resistive $ac$ circuit,the current
- ALags behind the $e.m.f.$ in phase
- BIs in phase with the $e.m.f.$
- CLeads the $e.m.f.$ in phase
- DLeads the $e.m.f.$ in half the cycle and lags behind it in the other half
Explore More
Similar Questions
$A$ coil has an inductance of $2 \ H$. The ratio of its reactance when it is connected first to an $A.C.$ source and then to a $D.C.$ source is:
The graphs given below depict the dependence of two reactive impedances $X_1$ and $X_2$ on the frequency of the alternating e.m.f. applied individually to them. We can then say that
Medium
View Solution$A$ choke coil has
The average power dissipated in a pure inductor is
In an a.c. circuit with pure capacitance $C$ and a.c. source $E = E_0 \sin \omega t$, the equation of instantaneous current is given by
Vedclass 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