Y11 TSN IGCSE Physics Electricity Group 4

Electrostatic charges can be useful during paint spraying. The droplets of paint are given the same charge as they leave the sprayer. Explain why this is an advantage.

• Because opposite charges repel

• Because like charges repel

• Because opposite charges attract

• Because like charges attract

Electrostatic charges can be useful during paint spraying. The droplets of paint are positively charged. The object being painted is given a negative charge. Explain why this is an advantage.

• Because opposite charges repel

• Because like charges attract

• Because opposite charges attract

• Because like charges repel

Two oppositely charged particles are held in place near each other. When the particles are released, what will most likely happen?

• They will accelerate towards each other

• They will accelerate away from each other

• They will move towards each other at a constant speed

• They will move away from each other at a constant speed

Balloon P hangs from an insulating thread.

A teacher gives the balloon a positive electric charge, as shown in the figure below. When the baloon is charged like this, it:

• Gained electrons

• Lost electrons

• Gained protons

• Lost protons

A student holds a roll of sticky tape and pulls the end down as shown in the diagram. This causes both the roll and the end of the tape to become electrically charged by friction. Explain how the object becomes charged by friction:

• There is a transfer of protons

• Both ends become positively charged due to electron transfer

• Tearing allows the transfer of electrons

• It does not become charged by friction

Why does the end of the tape move back towards the roll when the student lets go of it?

• Tape and roll are similarly charged

• The electrons move back to the roll

• The role and the tape are oppositely charged

• It does not move back