Assertion: solar cell's electron | /r/CapableOf | flow in one direction
Facets:
value: around a circuit
type: LOCATION
value: with dc electricity
type: OTHER
Source sentences:
text: With DC electricity, electrons flow in one direction around a circuit.
text: However the electric field, a one-way down-hill road superimposed across the cell, allows the electrons to flow only in one direction.