Question

An ion engine has a 1T magnetic field and hydrogen plasma is to be short out at an E×B velocity of 1150km/s. how much internal electric field must be present in the plasma?

Answer 1

As per the question,

Magnetic field of the ion engine $(B)=1T$

Speed of the light $(c)=1150 km/sec=1150\times 10^{3} m/sec$

internal electric field (E)=?

E$=cB = 1150\times 10^{3}\times 1 N/c$

$=1.15\times 10^{6} N/c$