Electricity

Question 0

Define electrical insulation and give an example

Answer 0

An electrical insulator doesn’t allow electrical currents to pass through it such as rubber

Question 1

Define electrical conduction (give example)

Answer 1

An electrical conductor allows an electric current to pass through it like copper

Question 2

What allows a conductor to conduct electricity

Answer 2

A conductor such as copper is not as tightly packed allowing the electrons to move freely

Question 3

What creates static electricity?

Answer 3

Static electricity is created when two certain materials rub against each other and some electrons are transferred from the one material to the other

Question 4

What is static electricity?

Answer 4

Static electricity is when electrons gather in one place.

Question 5

What happens when two like charges are near each other

Answer 5

They repel each other

Question 6

What happens when two opposite charges are near each other

Answer 6

They attract to each other

Question 7

What happens when a charged object is near a conductor

Answer 7

It sends it charge to the conductor (electric shocks on the trampoline)

Question 8

How do you draw an accurate circuit diagram?

Answer 8

No symbols should be on corners, angles should be 90 degrees and all lines need to be ruled

Question 9

What is electrical current what are its units

Answer 9

Current is the speed at which electrons in a circuit it is measured in amperes (amps, A)

Question 10

What is voltage and what is its units

Answer 10

Voltage is the amount of electricity carried through a particular part of a circuit measured in volts (V)

Question 11

Describe a series circuit

Answer 11

A series circuit has all its components connected one after the other (only one path for the current to take)

Question 12

Describe a parallel circuit

Answer 12

The components are parallel to each other (the current has multiple paths to take)

Question 13

How does the current change around series and parallel circuits

Answer 13

In series there is only one way for the current to go because of this the current is the same in all locations of the circuit, whereas in parallel it branches off meaning that the overall current is split equally between all branches

Question 14

How does the voltage change around series and parallel circuits

Answer 14

In a series circuit the overall voltage is split evenly to all the components. Whereas on a parallel circuit all the branched components receive the full voltage

Question 15

What is the advantage and disadvantage of having a series circuit

Answer 15

A disadvantage about the series circuit would be that if one bulb/component breaks the others won’t work either because of this the series circuit would be a good idea if you were to have just one bulb/component.

Question 16

What is the advantage and disadvantage of having a parallel circuit

Answer 16

A positive is that if one bulb blows the other don’t but because it has to split the current it draws more current so it costs more