Electrical Engineering A circular cathode and a circular anode each of radius a = 20 mm are separated d = 40 mm apart and connected to a potential difference V = 100 V. The cathode is made of a potassium-based compound with a work function e0 = 1.6 eV and a quantum efficiency h = 18%. The answer in the back of the book is 0.142 A which idk how they got it Anode a Radiation V Cathode

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Electrical Engineering
A circular cathode and a circular anode
each of radius a = 20 mm are separated d =
40 mm apart and connected to a potential
difference V = 100 V. The cathode is made
of a potassium-based compound with a
work function e0 = 1.6 eV and a quantum
efficiency h = 18%. The answer in the back
of the book is 0.142 A which idk how they
got it
Anode
a
Radiation
Cathode
d
Transcribed Image Text:Electrical Engineering A circular cathode and a circular anode each of radius a = 20 mm are separated d = 40 mm apart and connected to a potential difference V = 100 V. The cathode is made of a potassium-based compound with a work function e0 = 1.6 eV and a quantum efficiency h = 18%. The answer in the back of the book is 0.142 A which idk how they got it Anode a Radiation Cathode d
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