Which component houses the tungsten filament and emits electrons when heated?

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Multiple Choice

Which component houses the tungsten filament and emits electrons when heated?

Thermionic emission in the cathode is the key idea. The tungsten filament is housed inside the cathode assembly, and when it’s heated by an electrical current, electrons gain enough energy to escape the metal surface. Those emitted electrons are then pulled toward the positively charged anode to produce the X-ray beam. The other parts don’t generate electrons: the anode is the target that X-rays are produced upon, the unleaded glass window is just the exit path for X-rays, and the Position-Indicating Device (PID) helps aim and shape the beam.

Thermionic emission in the cathode is the key idea. The tungsten filament is housed inside the cathode assembly, and when it’s heated by an electrical current, electrons gain enough energy to escape the metal surface. Those emitted electrons are then pulled toward the positively charged anode to produce the X-ray beam. The other parts don’t generate electrons: the anode is the target that X-rays are produced upon, the unleaded glass window is just the exit path for X-rays, and the Position-Indicating Device (PID) helps aim and shape the beam.

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