________ 7. It is an ore of iron (Fe3O4), which attracts small pieces of iron, cobalt and nickel towards it.
________ 8. It is a method in determining the direction of magnetic field force.
________ 9. This finger points to the direction of the velocity and current of a moving charge.
Answers & Comments
Answer:
7.magnet
8.right hand rule
9.right thumb
Explanation:
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