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  4. In the circuit shown here, the point 'C' is kept connected to point A till the current flowing through the circuit becomes constant. Afterward, suddenly point C is disconnected from point A and connected to point B at time t = 0. Ratio of the voltage across resistance and the inductor at t = L / R will be equal to <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/993e5ca4412eaf20245edde293ef9e13-.png />

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Q. In the circuit shown here, the point 'C' is kept connected to point $A$ till the current flowing through the circuit becomes constant. Afterward, suddenly point $C$ is disconnected from point $A$ and connected to point $B$ at time $t = 0$. Ratio of the voltage across resistance and the inductor at $t = L / R$ will be equal to
image

JEE MainJEE Main 2014Alternating Current

Solution:

Applying Kirchhoff's law in closed loop, $-V_{R}-V_{C}=0$
$\Rightarrow V_{R} / V_{C}=-1$
Note : The sense of voltage drop has not been defined. The answer could have been 1