## Electric Current explained simply in 7 minutes!

In this video you will learn the basics of the electric current, i.e. the definition, its physical meaning and unit.⠀

In this video you will learn the basics of the electric current, i.e. the definition, its physical meaning and unit.⠀

` $$ X_{\text C} ~=~ -\frac{1}{2\pi \, f \, C} $$ `

` $$ F ~=~ q \, E $$ `

` $$ \class{violet}{B} ~=~ \mu_0 \, \mu_{\text r} \, \frac{ \class{red}{I} \, N }{ l } $$ `

The exercise teaches you how to calculate the charge of a thundercloud using the capacitance and E-field in the plate capacitor.

In this exercise with solution about the plate capacitor, the capacitance, voltage and energy must be compared with and without dielectric.