a p.d = V is applied between 2 coaxial conducting pipes of radii a and b , with b>a.the pipes are made of non magnetic material. a long straight wire current I is fixed along the axis of the 2 pipes.an electron leaves the inner (cathode) pipes's surface with a negligible velocity.find the values of p.d V at which the electron can not outer pipe (anode)

Amit Saxena , 11 Years ago

Grade upto college level