# magnetic field produced by single wire (Ampere law / Biot-Savart Law)





• 100 kA at 1 mm radius is 20 T
• 10 MA at 4 mm radius is 500 T
• 100 kA at 1 um radius is 20 kT

# Bennett condition

• magnetic pressure = plasmakinetic pressure
• so our plasma pressure (at 100 kA at 1 um radius) is about 1,600 MBar (wau!! really??!!)