Question 2_5_6

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

Static electricity arises due to of electric charges in insulating materials. If electrons are moved, a potential difference or is made.

Only move. Protons which are positive never move.

When a polythene rod is rubbed with a cloth, move from the cloth to the rod. This gives the rod a negative charge.

If two negatively charged rods are brought together, they will . If a negatively charged rod and a positively charged rod are brought together, they . Therefore charges repel, charges attract.

Static electricity can be discharged by allowing the electrons to flow to the ground through a wire. The current is . If the potential difference is big enough a will jump.