Step 1
Current Starts Rising
Current begins to flow through the coil, but it cannot jump instantly.
Circuit Element Explanation
Inductor
An inductor stores energy in a magnetic field and does not like sudden current changes.
Back to Circuit ElementsExplanation
- It reacts when current tries to change quickly.
- It is used in filters, converters, motors, relays, and energy storage circuits.
- When current rises, it pushes back. When current falls, it releases stored energy.
Formula
V = L(di/dt)
- V is the voltage across the inductor.
- L is the inductance.
- di/dt tells how quickly current is changing.
Key Idea
An inductor stores current energy and resists sudden current changes.
Visual Explanation Steps
Show current moving through a coil while magnetic field rings grow around it.
Step 2
Magnetic Field Grows
The coil stores energy by building a magnetic field around it.
Step 3
Back EMF Opposes Change
The inductor produces an opposing voltage whenever current tries to change quickly.
Step 4
Current Becomes Steady
After the transient period, current reaches a steady value and the stored magnetic energy remains.