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Electron, Photon, Photoelectric Effect and X-Rays — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectron, Photon, Photoelectric Effect and X-Rays1 Mark
Question

A cathode emits 1.8  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 . The maximum anode current is

(a) 2.7 μA

(b) 29 μA

(c) 72 μA 

(d) 29 μA
✓

Answer

(b) 29 μA

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