# Category Physics Class – 12

## Derivation for mutual inductance of two long co-axial solenoids In this article, we will derive an expression for the mutual inductance of two long coaxial solenoids. So let’s get started… What is mutual inductance? Mutual inductance is a phenomenon in which an emf is induced in the secondary coil…

## Mutual inductance – definition, formula, units, and dimensions Hmmm… Mutual inductance has more self-respect than self-inductance because it has a wide range of applications in electrical engineering. Mutual inductance is the main working principle of generators, motors, transformers, etc. Self-inductance induces an emf across the coil itself. But…

## Self-inductance of a long solenoid class 12 In this short piece of article, we will obtain an expression of self-inductance of a long solenoid. So let’s get started… Expression for Self-inductance of a long solenoid Self-inductance of a long solenoid. Consider a long solenoid of length $l$…

## Relation between induced charge and change in magnetic flux This will be a short article, so without talking too much let’s get started… Relation between induced charge and change in magnetic flux According to the faraday’s law, the induced EMF is given as $${\mathcal {E}}=\frac{\Delta \phi}{\Delta t}$$ If…