Voltage and current in an $ac$ circuit are given by $V = 5\sin(100\pi t - \frac{\pi}{6})$ and $I = 4\sin(100\pi t + \frac{\pi}{6})$. Which of the following statements is correct?

  • A
    Voltage leads the current by $30^o$
  • B
    Current leads the voltage by $30^o$
  • C
    Current leads the voltage by $60^o$
  • D
    Voltage leads the current by $60^o$

Explore More

Similar Questions

The alternating current in a circuit is described by the graph shown in the figure. Calculate the root mean square $(I_{rms})$ current for this waveform.

An electric lamp is connected to a $220 V, 50 Hz$ supply. The peak value of the voltage is......$V$.

In an $AC$ generator, induced emf $\varepsilon = 0$ at $t = 0$, then its value . . . . . .

$A$ resistance of $20 \, \Omega$ is connected to a source of an alternating potential $V = 220 \sin(100 \pi t)$. The time taken by the current to change from its peak value to its r.m.s. value is:

$(a)$ The peak voltage of an $ac$ supply is $300 \; V$. What is the $rms$ voltage?
$(b)$ The $rms$ value of current in an $ac$ circuit is $10 \; A$. What is the peak current?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo