mr_guy99493
New Member
- Joined
- Feb 25, 2004
- Messages
- 11
- Gender
- Undisclosed
- HSC
- 2004
if youve got a photocell? i think thats the one, - thermionic device, ?
theres a circuit with a vacuum tube, and a potential difference applied across it,
when photons hit the photo sensitive electrode, electrons are emitted, and travel across the vacuum, but the electric field opposes their motion.
if the same intensity radiation, but different frequency radiation were shone on the electrode, would the current through the circuit be constant, until the energy of the electrons at the other electrode was zero, and the current becomes zero?
or a current proportional to the energy of the electrons as they reach the other electrode.
theres a circuit with a vacuum tube, and a potential difference applied across it,
when photons hit the photo sensitive electrode, electrons are emitted, and travel across the vacuum, but the electric field opposes their motion.
if the same intensity radiation, but different frequency radiation were shone on the electrode, would the current through the circuit be constant, until the energy of the electrons at the other electrode was zero, and the current becomes zero?
or a current proportional to the energy of the electrons as they reach the other electrode.