Question

3
A cathode emits 1.8 x
all the electrons reach the anode when it is
given a positive potential of 400 V. Given
e=1.6 x 10-1°C, the maximum anode current
is
1) 2.88 mA 2)28.8 mA 3) 7.2 mA 4) 6.4 mA​

Answer 1

Answer:

28.8 mA is right answer ok any doubt again then ask