Which reverses the flow of current through
an electric motor?

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

be subject to a force andchange its motion