Question

In the L-C circuit shown in figure, the current is in direction shown in the figure and charges on the capacitor plates have sign shown in the figure A this time:-

A. i as well as Q increasing
B. i as well as Q decreasing
C. i is increasing but Q is decreasing
D. i decreasing but Q is increasing

Answer 1

Hint: Capacitor is a component which can store electrical energy. A simple capacitor has two plates of a conductor which are separated by a dielectric medium. The capacitor can be charged or discharged, if it is charging, then the value of current is increasing, and Q is decreasing, whereas if it is discharging, then we can say that current is increasing and Q is decreasing.

Complete step by step answer:
We know that the charge flows from higher potential to lower potential. On closely observing the given figure, we can conclude that the flow of current is in the direction of flow of charge that means the capacitor is discharging which means that the capacitor is discharging in this condition.

Therefore, we can say that current i is increasing and Q is decreasing as capacitor discharges.

So, the correct answer is “Option C”.

Note:
If we reverse the direction of flow of current, then it will become the condition of charging of the capacitor, which means that the current is decreasing and Q is increasing. We also know that at the fully charged condition of a capacitor, the flow of current through it will be zero.
The inductor is a component which can store electrical energy in magnetic energy’s form. It consists of a conductor on which a coil is wounded. When we allow the current to flow through the coil, it results in the generation of electrical energy.