Electricity

Question 1

Speed triangle

Answer 1

Speed = distance divided by time
Distance =speed x time
Time = distance divided by speed

Question 2

What are the units of speed

Answer 2

Km/h and m/s

Question 3

Which line of a cell is positive and which one is negative

Answer 3

Big one positive
Small one negative

Question 4

Where is an Ammeter connected

Answer 4

Series circuit

Question 5

Where is voltmeter connected

Answer 5

Parallel circuit

Question 6

What happens to current in a series circuit

Answer 6

It stays the same

Question 7

What happens to current in a parallel

Answer 7

It splits then when the current meets again it adds back up again

Question 8

What happens to voltage in a series

Answer 8

It splits up, the voltage will add up to the voltage of the battery

Question 9

What happens to voltage in parallel

Answer 9

Stays the same

Question 10

How do you find the resistance in a series

Answer 10

Add up the resistors values
R1 + R2 etc

Question 11

How to find the resistance in parallel

Answer 11

Resistance = r1 x r2 divided by r1 + R2

Question 12

What is the charge equation

Answer 12

Q=IT
I= current
T = time in seconds

Question 13

What is the units of current

Answer 13

Amps

Question 14

What is the units of resistance

Answer 14

Ohms

Question 15

What is the ohms law equation

Answer 15

V =IR

Question 16

How do you calculate moment

Answer 16

Force x distance

Question 17

Where is the pivot in class 1

Answer 17

Between the load and effort

Question 18

Where is the pivot in class 2

Answer 18

On the end closer to the load

Question 19

Where is the pivot on class 3

Answer 19

The end closest to the effort

Question 20

Units of moments

Answer 20

Newton meters
Newton centimetres

Question 21

What is moment

Answer 21

A turning force

Question 22

What is the moment when the pivot is balanced

Answer 22

Clockwise is equal to the anti-clockwise

Question 23

What are atoms made up of

Answer 23

Protons neutrons and electrons

Question 24

What happens during nuclear fission

Answer 24

A large nucleus such as Uranium absorbs a neutron it becomes unstable and splits into 2 smaller nuclei as well as a few neutrons

Question 25

What is a chain reaction of nuclear fission

Answer 25

After one reaction the neutrons produced hit other nucleus and cause further fission reactions

Question 26

What is nuclear fusion

Answer 26

The joining of 2 small nuclei such as hydrogen to form a larger nucleus such as helium

Question 27

What is Einsteins equation and what does it mean

Answer 27

E= mc2
It means a little bit of math causes a lot of energy

Question 28

What are some forms of energy resources

Answer 28

Oil, coal, gas, nuclear, wind, solar

Question 29

What is a renewable resource

Answer 29

Resource which can be replaced quickly

Question 30

What are non renewable resources

Answer 30

Resources which once used up is impossible to make more

Question 31

Examples of renewable resources

Answer 31

Wind, solar, hydroelectric, todal

Question 32

Examples of non renewable

Answer 32

Oil and coal and gas and uranium

Question 33

What is nuclear waste

Answer 33

When both fusion and fission produce radioactive atoms called nuclear waste. Fission produces more

Question 34

What reaction makes up nuclear bomb

Answer 34

Nuclear fission

Question 35

What is current

Answer 35

The number of electrons through a wire per second

Question 36

What is voltage

Answer 36

The amount of pressure pushing electrons through a wire