We can calculate the net (overall) charge on an object if we know how many positive charges and how many negative charges there are. Look at the diagram given below. Calculate the sign and size of the net charge on each object.
Important Questions on Electrostatics and Electric Currents
We can calculate the net (overall) charge on an object if we know how many positive charges and how many negative charges there are. Look at the diagram given below. Calculate the sign and size of the net charge on each object.
Lily uses the apparatus in the image below to investigate how a charged insulator can affect the behaviour of everyday objects. Look at the diagram carefully and answer the question.
Describe and explain a method Lily can use to charge an object.
Lily uses the apparatus in the image below to investigate how was charged insulated can affect the behaviour of everyday objects. Look at the diagram carefully and answer the question.
Look at the table. The first column shows objects that Lily gives charge to. She then brings each charged object slowly closer to each of the objects in the second column.
Complete the table by describing what you would expect Lily to observe for each object.
| Charged Object | Test Object | Observation |
| Ruler | Small pieces of paper | Pieces of paper are attracted to the ruler. |
| Sheet of plastic food wrap | Another sheet of plastic food wrap | |
| Balloon | Wall | |
| Ruler | Metal paper clips |
Lily uses the apparatus in the image below to investigate how was charged insulated can affect the behaviour of everyday objects. Look at the diagram carefully and answer the question.
Lily wants to test how tap water is affected by a charged object.
Describe how Lily can do this. Which items of apparatus Lily needs?
Lily uses the apparatus in the image below to investigate how was charged insulated can affect the behaviour of everyday objects. Look at the diagram carefully and answer the question.
Lily wants to test how tap water is affected by a charged object.
Describe a method how Lily can do this.
Lily uses the apparatus in the image below to investigate how was charged insulated can affect the behaviour of everyday objects. Look at the diagram carefully and answer the question.
Lily wants to test how tap water is affected by a charged object. Describe what you would expect Lily to observe.
