Answer:
Active voice is used to classify sentences in which the subject of the sentence is the one actively performing the action of the verb.
A verb is in the passive voice when the subject of the sentence is acted on by the verb.
Example :
I will clean the house every Saturday. (Active Voice )
The house will be cleaned by me every Saturday
(Passive Voice )
Did you tell them ? (Active Voice)
Were they told by you ? (Passive Voice )