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Year 10 Physics > Electricity > Flashcards

Electricity Flashcards

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1
Q

Speed triangle

A

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

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2
Q

What are the units of speed

A

Km/h and m/s

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3
Q

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

A

Big one positive
Small one negative

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4
Q

Where is an Ammeter connected

A

Series circuit

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5
Q

Where is voltmeter connected

A

Parallel circuit

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6
Q

What happens to current in a series circuit

A

It stays the same

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7
Q

What happens to current in a parallel

A

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

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8
Q

What happens to voltage in a series

A

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

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9
Q

What happens to voltage in parallel

A

Stays the same

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10
Q

How do you find the resistance in a series

A

Add up the resistors values
R1 + R2 etc

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11
Q

How to find the resistance in parallel

A

Resistance = r1 x r2 divided by r1 + R2

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12
Q

What is the charge equation

A

Q=IT
I= current
T = time in seconds

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13
Q

What is the units of current

A

Amps

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14
Q

What is the units of resistance

A

Ohms

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15
Q

What is the ohms law equation

A

V =IR

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16
Q

How do you calculate moment

A

Force x distance

17
Q

Where is the pivot in class 1

A

Between the load and effort

18
Q

Where is the pivot in class 2

A

On the end closer to the load

19
Q

Where is the pivot on class 3

A

The end closest to the effort

20
Q

Units of moments

A

Newton meters
Newton centimetres

21
Q

What is moment

A

A turning force

22
Q

What is the moment when the pivot is balanced

A

Clockwise is equal to the anti-clockwise

23
Q

What are atoms made up of

A

Protons neutrons and electrons

24
Q

What happens during nuclear fission

A

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

25
Q

What is a chain reaction of nuclear fission

A

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

26
Q

What is nuclear fusion

A

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

27
Q

What is Einsteins equation and what does it mean

A

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

28
Q

What are some forms of energy resources

A

Oil, coal, gas, nuclear, wind, solar

29
Q

What is a renewable resource

A

Resource which can be replaced quickly

30
Q

What are non renewable resources

A

Resources which once used up is impossible to make more

31
Q

Examples of renewable resources

A

Wind, solar, hydroelectric, todal

32
Q

Examples of non renewable

A

Oil and coal and gas and uranium

33
Q

What is nuclear waste

A

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

34
Q

What reaction makes up nuclear bomb

A

Nuclear fission

35
Q

What is current

A

The number of electrons through a wire per second

36
Q

What is voltage

A

The amount of pressure pushing electrons through a wire

Year 10 Physics (1 decks)

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