Dangers of Mains Electricity (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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11 cards from this deck
What happens to potential difference if you touch a live wire?
What happens to potential difference if you touch a live wire?
A large potential difference is produced
Where is the potential difference when touching a live wire?
Where is the potential difference when touching a live wire?
Between your body and the wire
What flows through you when touching live wire
What flows through you when touching live wire
Current
Result of current flowing through your body
Result of current flowing through your body
Electric shock
Possible consequences of electric shock
Possible consequences of electric shock
May injure or kill you
Potential difference in live wire when appliance off
Potential difference in live wire when appliance off
Still present (can still shock you)
Shock risk from switched-off appliance
Shock risk from switched-off appliance
Can still get electric shock
Result of live wire touching Earth wire
Result of live wire touching Earth wire
Low resistance path created
Where current flows via low resistance path
Where current flows via low resistance path
To Earth
Size of current through live-Earth wire contact
Size of current through live-Earth wire contact
Very large current
Danger from very large current in wire contact
Danger from very large current in wire contact
Can cause fires