physics

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  • Created by: F.W1234
  • Created on: 22-05-18 16:51
What is the current in a live, neutral and earth wire?
Neurtal- 0V. Earth- 0V. Live- 230V
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In ohmic conductors what is the current directly proportional to?
Current is directly proportional to the potential difference across it.
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What does the graph look like for a linear / Non-linear component?
Linear- Straight through the origin. Non-linear- curved line.
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Define conduction?
Conduction- vibration of particles transferring energy to the thermal energy stores using kinetic energy.
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Define Convection?
The movement of particles with lots of energy (hot) to and area where the particles have less energy (cold).
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What is Specific latent heat?
The energy needed to change 1kg of a substance from one state to another.
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How can you change a volume using pressure?
As particles collide with the walls of a volume a pressure is exerted at a 90degree angle, this pressure can cause the volume to increase.
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What are the most to the least types of ionising radiation?
MOST- Alpha, Beta, Gamma- LEAST IONISING
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What are the most to the least penetrating (travel long distances) types of radiation?
MOST (long distance travel)- Gamma, Beta, Alpha- Least (travel shorter distances)
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What is the most dangerous type of radiation inside the body?
Alpha, as it's highly ionising but is weakly penetrating so cannot just go through the skin.
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What is the most dangerous type of radiation outside the body?
Gamma, as it's highly penetrating so can pass through the skin and potentially damage delicate organs.
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What does nuclear fission release?
2 neutrons
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What is the particle of alpha decay?
A helium particle- 2 electrons, 2 protons, 2 neutrons. He
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What is the particle released during beta decay?
Releases a fast moving electron.
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What happens during gamma decay?
Nothing subatomic!! Lots of energy is released.
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What is half life?
The time taken for the number of radioactive nuclei in an isotope to half.
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What happens when a polyethene rod is rubbed by a cloth.
Electrons move from the duster to the rod (the rod gains).
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What happens when a acetate rod is is rubbed by a cloth?
Electrons move from the rod to the cloth (the rod loses)
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How are voltmeters and Ammeters connected in a circuit?
A Voltmeter is connected parallel to the test component. Ammeters are connected in series after or before the test component.
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Other cards in this set

Card 2

Front

In ohmic conductors what is the current directly proportional to?

Back

Current is directly proportional to the potential difference across it.

Card 3

Front

What does the graph look like for a linear / Non-linear component?

Back

Preview of the front of card 3

Card 4

Front

Define conduction?

Back

Preview of the front of card 4

Card 5

Front

Define Convection?

Back

Preview of the front of card 5
View more cards

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