An object that attracts iron

A closed path for electricity to flow

Is the answer given in the above image correct?

which of these can move a nail lying on a table without touching the nail

A fifth-grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?

Benjamin Franklin discovered the form of energy produced by lightning. Experiments with lightning killed many people before he discovered that lightning is a form of —

A comb is rubbed with a piece of wool fabric and placed next to some scraps of paper. The paper moves toward the comb. The movement of the paper is caused by —

Which of these correctly shows what happens when two magnets are placed side by side?

The magnetic fields of any magnet are greatest —