The switches in figures (a) and (b) are close | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) For figure $(a)$,at $t = 0$,the capacitor is uncharged,so the charge is $0$. Just after $t = 0$,the capacitor acts as a short circuit,so the curre

Vedclass · Accepted Answer

Both $(B)$ and $(C)$.

Vedclass · Answer

(D) For figure $(a)$,at $t = 0$,the capacitor is uncharged,so the charge is $0$. Just after $t = 0$,the capacitor acts as a short circuit,so the current is $I = E/R$.Long after $t = 0$ $(t 	o \infty)$,the capacitor is fully charged and acts as an open circuit. The potential difference across the capacitor equals the $EMF$ of the battery $E$. Thus,the charge $q = EC$.For figure $(b)$,long after $t = 0$ $(t 	o \infty)$,the inductor acts as a short circuit (ideal inductor with zero resistance). The current in the circuit is determined by the resistor $R$. Thus,$I = E/R$.Therefore,both statements $(B)$ and $(C)$ are correct.

The switches in figures $(a)$ and $(b)$ are closed at $t = 0$.

Similar Questions

The figure shows three circuits with identical batteries,inductors,and resistors. Rank the circuits according to the current through the battery $(i)$ just after the switch is closed and $(ii)$ a long time later,greatest first.

An electron moves along the line $AB$,which lies in the same plane as a circular loop of conducting wires as shown in the diagram. What will be the direction of current induced,if any,in the loop?

Discuss the types of $AC$ generator. How much power they deliver? What is the frequency of $AC$ generator?

The magnetic field in the region shown in the figure increases at a constant rate of $20 \, mT/sec$. Each side of the square loop $ABCD$ has a length of $1 \, cm$ and a resistance of $4 \, \Omega$. Find the current in the wire $AB$ if the switch $S$ is closed.

The current $i$ in a coil varies with time as shown in the figure. The variation of induced $emf$ with time would be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module