grrr_arrghh
New Member
Hi.
During my GCSEs, I was taught two things about the high voltage cables, the sort that go accross pylons (the big metal sort).
Science taught me that they used AC because it lost less energy whilst traveling the long distances involved. However, Electronics (which regularly lied to us) taught us that they used AC because it meant that if you touched a cable (how you do this i'm not sure...) the chance of it being at full voltage is small, and there is an equally small chance that it will be a 0v, which would cause you no harm.
I was never sure about the reason given by electronics, as at 50Hz, the time it was around 0v was incredibly small, and would go to full voltage in an also very small time, so you would probably still get electrocuted.
So, I am asking who was right, Science or Electronics? I wouldn't be supprised if Electronics was just plain wrong.
Thankyou
Tim
During my GCSEs, I was taught two things about the high voltage cables, the sort that go accross pylons (the big metal sort).
Science taught me that they used AC because it lost less energy whilst traveling the long distances involved. However, Electronics (which regularly lied to us) taught us that they used AC because it meant that if you touched a cable (how you do this i'm not sure...) the chance of it being at full voltage is small, and there is an equally small chance that it will be a 0v, which would cause you no harm.
I was never sure about the reason given by electronics, as at 50Hz, the time it was around 0v was incredibly small, and would go to full voltage in an also very small time, so you would probably still get electrocuted.
So, I am asking who was right, Science or Electronics? I wouldn't be supprised if Electronics was just plain wrong.
Thankyou
Tim