## What is Inductor and Capacitor: Introduction

## FAQs on Difference Between Inductor and Capacitor for JEE Main 2024

1. What is the role of a capacitor in an electronic circuit?

The role of a capacitor in an electronic circuit is to store and release electrical energy. It can store charge and then release it rapidly when needed, smoothing out voltage fluctuations, filtering signals, blocking direct current (DC), and allowing alternating current (AC) to pass in certain configurations.

2. How does an inductor store and release electrical energy?

An inductor stores electrical energy in the form of a magnetic field when current flows through it. When the current changes, the magnetic field collapses, inducing a voltage and releasing the stored energy back into the circuit. This process allows for energy transfer and various applications in electrical systems.

3. Can a capacitor block DC current?

No, a capacitor cannot block direct current (DC) flow. Capacitors are passive components that allow the flow of both AC and DC currents. When a DC voltage is applied to a capacitor, it charges up and reaches a steady state, allowing the DC current to pass through. However, once the capacitor is fully charged, it behaves as an open circuit for DC, preventing any further flow. So, while a capacitor cannot block DC current, it can act as a temporary energy storage device for DC circuits.

4. How does the number of turns in an inductor affect its inductance?

The number of turns in an inductor directly affects its inductance. Increasing the number of turns in an inductor increases its inductance while decreasing the number of turns reduces the inductance. This relationship is linear, meaning that doubling the number of turns will double the inductance, and halving the number of turns will halve the inductance. The number of turns determines the amount of magnetic flux produced by the current flowing through the inductor, and thus, it influences the inductance value of the component.

5. Can a capacitor store energy indefinitely?

No, a capacitor cannot store energy indefinitely. Capacitors have the ability to store and release electrical energy, but they do experience energy losses over time. These losses occur due to factors such as internal resistance, leakage current, and dielectric losses. These losses cause the stored energy to gradually dissipate, and eventually, the capacitor will discharge completely. While capacitors can store energy for a certain period, they are not capable of storing energy indefinitely without external energy sources to maintain their charge.