Dangers of Mains Electricity (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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What happens if you touch a live wire?
What happens if you touch a live wire?
Large potential difference between body & wire
Result of potential difference from live wire
Result of potential difference from live wire
Current flows through your body
What does current through body cause?
What does current through body cause?
Electric shock
Consequences of electric shock
Consequences of electric shock
May injure or kill you
Live wire when appliance is off?
Live wire when appliance is off?
Still has potential difference
Can you get shocked from a switched-off appliance?
Can you get shocked from a switched-off appliance?
Yes, live wire still has potential difference
Result when live & Earth wires touch
Result when live & Earth wires touch
Low resistance path to Earth created
Size of current when live & Earth wires touch
Size of current when live & Earth wires touch
Very large current
What can very large currents cause?
What can very large currents cause?
Fires
When is electric shock still possible?
When is electric shock still possible?
When appliance is off (live wire still has PD)