P2.1 Static and Current Electricity Flashcards Preview

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Flashcards in P2.1 Static and Current Electricity Deck (15):
1

What is static electricity?

An electric charge on an insulating material.

2

What is an electrostatic charge caused by?

Electrons

3

How does an insulating material gain an electrostatic charge?

When electrons rub off a different material onto an atom.

4

Which charges attract and repel?

Same charges repel
Opposite charges attract

5

What is the name of the process when you rub a balloon to make it stick to a wall?

Induction, as the charge is an induced charge.

6

What is earthing?

The process when a metal is discharged by touching it with a wire connected to the earth.

7

What is discharging?

When you remove an electrical charge by conduction.

8

What is a natural phenomena that involves static currents?

Lightning.

9

What is a danger of everyday static electricity?

When it is likely to cause a spark.

10

What are some of the uses of static electricity?

Painting

11

Why can filling a fuel tank be dangerous?

The static electricity that has been built up could discharge and cause a spark, which could ignite the fuel.

12

What is earthing?

Earthing is when a static charge is safely removed from a material by conducting it into the ground with a copper wire.

13

What is Charge?

Current * Time

14

What is a definition of current?

The rate of flow of a charge.

15

Do cells and batteries supply d.c or a.c and what does this mean?

They supply d.c which means that the charge moves in one direction only.