When a certain circuit consisting of a consta | vedclass

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

Question

(A) The current in an $LR$ circuit as a function of time is given by $I(t) = \frac{E}{R}(1 - e^{-Rt/L})$.From the graph,we observe that the steady-sta

Vedclass · Accepted Answer

$L$ is increased

Vedclass · Answer

(A) The current in an $LR$ circuit as a function of time is given by $I(t) = \frac{E}{R}(1 - e^{-Rt/L})$.From the graph,we observe that the steady-state current $I_{max} = \frac{E}{R}$ is the same for both curves $1$ and $2$. This implies that the ratio $\frac{E}{R}$ remains constant.Since $E$ and $R$ are constant,the change must be in the inductance $L$.The time constant of the circuit is $	au = \frac{L}{R}$.Curve $2$ rises more slowly than curve $1$,which means the time constant $	au$ for curve $2$ is larger than for curve $1$.Since $	au = \frac{L}{R}$ and $R$ is constant,an increase in $	au$ implies an increase in $L$.Therefore,the inductance $L$ was increased.

Similar Questions

One line of the pair of lines $x^2+xy-2y^2=0$ is perpendicular to one line of the pair of lines $3y^2-5xy-2x^2=0$. If the combined equation of the two lines other than those two perpendicular lines is $ax^2+2hxy+by^2=0$,then $a+2h+b=$

The length of the subtangent at any point $(x_1, y_1)$ on the curve $y=5^x$ is

Particles and their anti-particles have

$A$ piece of copper and another of germanium are cooled from room temperature to $80\, K$. The resistance of :

Based on lattice energy and other considerations,which one of the following alkali metal chlorides is expected to have the highest melting point?

Vedclass Test Series

Exam Paper Generator

Online Exam Module