GCSE Physics Topics - Pass My Exams: Easy exam revision notes for GSCE Biology GCSE Physics Topics - Pass My Exams: Easy exam revision notes for GSCE Biology

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Forces and Motion

The size of the electric current is the rate of flow of electrical charge. They are emitted by a decaying nucleus, that expels the gamma rays in an effort to become more stable as an atom. The earth wire is a safety wire to stop the appliance becoming live.

If we all continue to demand more electricity this means building new power stations in every generation — but what mix of power stations can promise a sustainable future?

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The current through a diode flows in one direction only. You should have investigated, using circuit diagrams to set up a circuit, the factors that affect the resistance of an electrical component In the United Kingdom it has a frequency of 50 Hz and is about V.

Touching the live wire produces a large potential difference across our body. You should have investigated the relationship between the resistance of a thermistor and temperature You should have investigated the relationship between the resistance of an LDR and light intensity.

Attraction and repulsion between two charged objects are examples of non-contact force.

Properties of Alpha, Beta, and Gamma Radiation: Speed and Energy

If you have any questions, suggestions or issues please leave a comment below no sign up required and I will try to answer it either on the comments section or update the article to incorporate it! The resistance of a filament lamp increases as the temperature of the filament increases graph 2 on right.

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I hope Radiocarbon dating gcse physics article has helped you understand nuclear radiation. It also explains why it is difficult to make a good cup of tea high up a mountain!

Unlike alpha radiation, though, beta radiation has the capacity to pass through living cells, though it can be stopped by an aluminum sheet.

The electric field is strongest close to the charged object. The greater the resistance of the component the smaller the current for a given potential difference pd across the component.

The blue glow produced in some nuclear power plant pools is due to high speed beta particles moving faster than that of light traveling through water.

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Heating changes the energy stored within the system by increasing the energy of the particles that make up the system. The force gets stronger as the distance between the objects decreases.

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This either raises the temperature of the system or produces a change of state. The further away from the charged object, the weaker the field.

Many circuits are powered with mains electricity, but portable electrical devices must use batteries of some kind.