Assertion: solar cell's electron | /r/CapableOf | drive current
Facets:
value: back to the cathode
type: TRANSITIVE-OBJECT
value: through an external circuit
type: MANNER
Source sentences:
text: When the cathode is heated to a high temperature, electrons become excited, jump across the thin vacuum to the relatively cold anode, and drive a current through an external circuit back to the cathode.