A cathode emits 1.8 10^ 14 electrons per second, when heated. Whe… - Vidyadip

MCQ

A cathode emits $1.8 \times 10^{14}$ electrons per second, when heated. When 400V is applied to anode all the emitted electrons reach the anode. The charge on electron is ${1.6} \times 10^{-19} \mathrm{C}$. The maximum anode current is

A
2.7 μA
✓
29 μA
C
72 μA
D
29 μA

✓

Answer

Correct option: B.

29 μA

(b) 29 μA

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