Question

does the following text have an inappropriate shift in verb tense? if so, fix any verbs that dont match the tense of the verb in bold. if not, submit the text without making any changes.
the photovoltaic cells in solar panels use energy from absorbed light to knock electrons in the cells loose. electric fields in the cells then directed the electrons in a particular direction, creating a flow of electricity.

Explanation:

The verb "use" is in present - tense. "Directed" is in past - tense, which is a tense shift error. It should be in present - tense to match "use".

Answer:

The photovoltaic cells in solar panels use energy from absorbed light to knock electrons in the cells loose. Electric fields in the cells then direct the electrons in a particular direction, creating a flow of electricity.