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Thermionic emission

Thermionic emission. If a tungsten filament is heated to about 2000 o C, some of the electrons have sufficient kinetic energy to escape from the surface of the wire. This effect is called thermionic emission .

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680 views • 35 slides

1.3c Current Electricity Alternating Currents

1.3c Current Electricity Alternating Currents. Breithaupt pages 74 to 79. November 14 th , 2010. AQA AS Specification. Direct and alternating current. Direct current (d.c.) This is electric current that does not change direction in a circuit. Note: Direct current may change in size.

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276 views • 25 slides

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Thermionic emission

1.3c Current Electricity Alternating Currents