Physics

Question 1

What are uses of static electricity?

Answer 1

Air filtration, photocopying, spraying of paint.

Question 2

What is static electricity?

Answer 2

Static electricity is generated when a object either gains or loses electric charge in the form of electrons.

Question 3

How do objects become positively charged?

Answer 3

When they lose electrons.

Question 4

How do objects become negatively charged?

Answer 4

When they gain electrons.

Question 5

Will two positively charged materials attract or repel each other?

Answer 5

Repel

Question 6

Will two negatively charged materials attract or repel each other?

Answer 6

Repel

Question 7

Will a positively charged material and a negatively charged material attract or repel

Answer 7

Attract

Question 8

What is the symbol for a lamp and it’s use?

Answer 8

a circle with a cross inside.
Gives out light energy when circuit is complete.

Question 9

What is the symbol for a Voltmeter and it’s use?

Answer 9

A circle with a ‘V’ inside.
Measures the voltage produced by the power supply.

Question 10

What is the symbol for a Ammeter and it’s use?

Answer 10

A circle with a ‘A’ inside.
Measures the flow of electrons in the circuit know as the current.

Question 11

What is the symbol for a Resistor and it’s use?

Answer 11

A rectangle
It reduces the flow of electrons in the circuit.

Question 12

What is the symbol for a Variable Resistor and it’s use?

Answer 12

A rectangle with an arrow going diagonal through it.
It reduces the flow of electrons in a circuit, the resistance can be changed.

Question 13

What is the symbol for a Cell and it’s use?

Answer 13

A sideways t with a another sideways t with a thick vertical line.
Transforms chemical energy into electrical enrgy.

Question 14

What is the symbol for a battery and it’s use?

Answer 14

multiple cells.
Two or more cells in a series.

Question 15

What is the symbol for a open switch and it’s use?

Answer 15

a circle with a line going diagonally down and another circle parallel to the first.
Breaks the circuit

Question 16

What is the symbol for a closed switch and it’s use?

Answer 16

a circle with a line connecting to another circle.
It connects the components in a circuit.

Question 17

What is the symbol for a thermistor and it’s use?

Answer 17

rectangle with a flat tick through it.
The resistance depends on the temperature.

Question 18

What should always do when drawing a circuit?

Answer 18

Use a ruler
Use circuit symbols
Draw wires as straight lines
Never put components on corners

Question 19

What is an conductor?

Answer 19

A material that allows an eletric current to pass through it.

Question 20

What is an example of an conductor?

Answer 20

Silver, gold, copper, steel and sea water

Question 21

What is an insulator

Answer 21

A material that will not allow an electric current to pass through it.

Question 22

What is an example of an insulator?

Answer 22

Rubber, glass, oil, diamond, dry wood.

Question 23

What is a current?

Answer 23

An electric current is a flow of negative charge around a circuit.

Question 24

is the current the same or different in a series circuit?

Answer 24

The current is the same at all points in a series circuit.

Question 25

is the current the same or different in a parallel circuit?

Answer 25

The current is shared between the components.

Question 26

What is the current measured in?

Answer 26

Amps (A). using a ammeter connected to the circuit.

Question 27

What does voltage measure?

Answer 27

Measures how hard the cell of battery is pushing out the charge around the circuit.

Question 28

What does a higher voltage mean?

Answer 28

More energy is being transferred to the components.

Question 29

What is voltage measured in?

Answer 29

Measured in volts using a voltmeter connected either side of the component.

Question 30

What is a series circuit like?

Answer 30

All the compnents are connected in one loop.

Question 31

What is the current and voltage like in a series circuit?

Answer 31

Current same at all points. Voltage adds up to the cell or battery voltage.

Question 32

What is an advantage of using a parallel circuit?

Answer 32

If one bulb breaks the others will still work.

Question 33

What is a parallel circuit like?

Answer 33

The components are connected side by side in branches. There is more than one electrical path.

Question 34

What is the current and voltage like in a parallel circuit?

Answer 34

Current in each branch adds up to the cell or battery current. Voltage is the same at all points of the circuit.

Question 35

Can fruit and vegetables be used to produce electricity?

Answer 35

They can produce electricity when two different metals are pushed into the fruit and connected to a circuit.

Question 36

What fruits/vegetables produce the highest voltage?

Answer 36

Citrus fruits.

Question 37

Advantages of electric transport?

Answer 37

Low maintenance costs. (fewer parts that could need to be fixed) No fuel emissions (as not powered by fossil fuels. reduces greenhouse emissions) Lower running costs (electricity is cheaper than fossil fuels)

Question 38

Disadvantages of electric transport?

Answer 38

Limited driving range (needs to be charged as it has shorter battery life than fossil fueled vehicles) Charging infrastructure (not a large range of charging stations) Charging time (takes longer to charge than it does to refuel not-electric vehicles)