Electricity & Magnetism
Advanced

Field Inside a Solenoid

Magnetic field inside an ideal solenoid.

Formula

B=μ0nIB = \mu_0 n I

Variables

\mu_0Permeability
nTurns per length
ICurrent

Did You Know?

A coiled solenoid concentrates its magnetic field inside like a bar magnet you can switch on and off.

solenoidmagnetic field