Electricity Revision by Mr Armstrong https://padlet.com/0812pdha/4W2 en-us 2016-02-20 15:37:30 UTC 2019-03-30 00:16:42 UTC hello@padlet.com https://padlet.com/0812pdha/4W2/wish/99065104 2016-03-04 15:58:54 UTC https://padlet.com/0812pdha/4W2/wish/99065104 Static and Electricity Revision  0812pdha https://padlet.com/0812pdha/4W2/wish/111415531 Write the key words, phrases and concepts briefly (no long sentences). Use the learning objectives from your revision sheet and last week's homework to help. ]]> 2016-05-18 09:36:58 UTC https://padlet.com/0812pdha/4W2/wish/111415531 Double insulation 0812pdha https://padlet.com/0812pdha/4W2/wish/111416492 No earth wire
Plastic (insulator) outer case
Less chance of an electric shock]]> 2016-05-18 09:44:23 UTC https://padlet.com/0812pdha/4W2/wish/111416492 Current https://padlet.com/0812pdha/4W2/wish/111474566 AC- change direction constantly 
DC-same direction
Current- rate of flow of charge 
Voltage- energy transferred per unit charge passed

]]> 2016-05-18 14:45:20 UTC https://padlet.com/0812pdha/4W2/wish/111474566 Helpful equations https://padlet.com/0812pdha/4W2/wish/111474923 P= IV
Watts
E = ItV 
I = Q/t
V=IR

]]> 2016-05-18 14:46:35 UTC https://padlet.com/0812pdha/4W2/wish/111474923 Earthing 12waterkeynsa https://padlet.com/0812pdha/4W2/wish/111475027 A wire going the ground to stop electrocution as electricity goes through the ground not the person! ]]> 2016-05-18 14:47:04 UTC https://padlet.com/0812pdha/4W2/wish/111475027 Voltage https://padlet.com/0812pdha/4W2/wish/111475410 •The Volt is a Joule per Coulomb
•Voltage is the energy transferred per unit charge passed]]> 2016-05-18 14:48:26 UTC https://padlet.com/0812pdha/4W2/wish/111475410 Circuit breaker https://padlet.com/0812pdha/4W2/wish/111475415 circuit breaker is a switch 
Disconnects when current is too high 
No more current 
Found in fuse box 

]]> 2016-05-18 14:48:27 UTC https://padlet.com/0812pdha/4W2/wish/111475415 Current https://padlet.com/0812pdha/4W2/wish/111475847 Current is the rate of flow of charge]]> 2016-05-18 14:49:43 UTC https://padlet.com/0812pdha/4W2/wish/111475847 Dangers https://padlet.com/0812pdha/4W2/wish/111476168 Frayed/old wiring/damaged wires: may expose live wires
Water around socket
Long cables: easy to trip over
Damaged plugs
Putting metal objects into sockets 

]]> 2016-05-18 14:50:39 UTC https://padlet.com/0812pdha/4W2/wish/111476168 Fuse 12waterkeynsa https://padlet.com/0812pdha/4W2/wish/111476291 Thin metal metal wire
That overheats and melts when current gets too high
Thus breaking the circuit
When using fuses 10A needs 13A fuse so the circuit doesn't melt easily
3A = 5A
If fuse too high - FIRE DANGER]]> 2016-05-18 14:51:07 UTC https://padlet.com/0812pdha/4W2/wish/111476291 Mains Supply and Supply from a battery https://padlet.com/0812pdha/4W2/wish/111476768 Mains supply is alternating
Battery is direct
Mains is a higher voltage(230V)
Battery is less(9V]]> 2016-05-18 14:52:35 UTC https://padlet.com/0812pdha/4W2/wish/111476768 Electrostatic Charges https://padlet.com/0812pdha/4W2/wish/111476980 Opposite charges attract
Like charges repel]]> 2016-05-18 14:53:16 UTC https://padlet.com/0812pdha/4W2/wish/111476980