Self-induction and mutual induction
Electromagnetic induction · Physics
DC circuit
Interactive 3DElectrons drift around the loop — raise the voltage and watch the current obey Ohm's law.
Controls
Drag the sliders or type a value — the simulation updates live.
Study notes
Problem: A coil has an inductance of 2 Henrys. If the current in the coil changes from 0 A to 5 A in 0.1 seconds, calculate the induced EMF. Steps: 1. Identify the given values: - Inductance (L) = 2 H - Change in current (ΔI) = 5 A - 0 A = 5 A - Time taken (Δt) = 0.1 s 2. Use the formula for induced EMF due to self-induction: EMF (E) = -L * (ΔI / Δt) (Note: The negative sign indicates opposition to change, but we usually calculate the magnitude for such problems.) 3. Substitute the values: E = 2 * (5 / 0.1) E = 2 * 50 E = 100 Volts Answer: The magnitude of the induced EMF is 100 Volts.