By convention, the direction of the current in a wire is considered as opposite to the direction of the motion of in the wire.

electrons

Explanation:

this is because it is actually the flow of electrons but when scientists a long time ago believed that it was the movement of the protons which we now call it the conventional current flow but as we know, protons can't move but the electrons can .

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i think they are all correct

explanation:

they seem good

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.