I love your vids so much....watched them all when i did my AS/A2 physics in a year and was sucssessful and now i am in University doing Electrical and computer engineering....and i still watch any elec related vids no matter what level...just really great vids!!
Good video Good teacher. 16:20 Many electricians call the nuetral wire or line as cold. When we check it with the hot wire tester, the tester lamp does not light that means that no current is passing between the nuetral and ground through the high value resistor (more than 100 kilo ohms) that is in series with the tester lamp and the body of the person who is doing the test. In some countries the nuetral is combined with the earth line . It is true that the the current is alternating but only when the circuit is completed. Isn't that true ? Is there an explanation on this issue ?
High voltage transmission lines are typically made of aluminium (plus steel for mechanical support) due to it being much cheaper than copper, hence the need to step up to such large voltages to reduce I^2R loss.
10:47 Why is it commonly said 230 V AC which means 230 V Alternative Current ? Why isn't it said 230V AV referring to Alternative Volt or Alternative Voltage ?
I love your vids so much....watched them all when i did my AS/A2 physics in a year and was sucssessful and now i am in University doing Electrical and computer engineering....and i still watch any elec related vids no matter what level...just really great vids!!
Thanks! I needed this for my Physics exam tomorrow!
Good video Good teacher.
16:20
Many electricians call the nuetral wire or line as cold. When we check it with the hot wire tester, the tester lamp does not light that means that no current is passing between the nuetral and ground through the high value resistor (more than 100 kilo ohms) that is in series with the tester lamp and the body of the person who is doing the test. In some countries the nuetral is combined with the earth line .
It is true that the the current is alternating but only when the circuit is completed.
Isn't that true ?
Is there an explanation on this issue ?
High voltage transmission lines are typically made of aluminium (plus steel for mechanical support) due to it being much cheaper than copper, hence the need to step up to such large voltages to reduce I^2R loss.
The voltage is actually so high that it can be successfully applied across steel cables :)
Thank you. I wasn't actually aware of that. Good to know.
do you have a lecture explaining the topic CRO in your playlist?
The resistivity of a piece of wire is also dependent upon the frequency of the applied signal as well as the temperature coefficient.
10:47 Why is it commonly said 230 V AC which means 230 V Alternative Current ?
Why isn't it said 230V AV referring to Alternative Volt or Alternative Voltage ?
excellent way to teach
Thanks sir u r a brilliant explainer
If the plug fuse blows how can the neutral wire give you a shock? I thought the current would no longer be able to flow as the circuit is not closed.
But power=V2/R also, sir(6:52). So wires carrying high voltage current would have more power loss according to this formula.
i thought the same
Ibraheem Baloch it is the change in voltage that matters
Great video thanks
1/50 = 0.02, other than that the video helped me a lot
i think at 11:11 your wavelength was wrong? need reply
The wavelength is the length of one complete wave
2:55 ? 😂